Does everyone else but me and my friends actually use Electrum, or are we normal for just ignoring it and converting it to Gold whenever it appears in a module or something?

Ahh, electrum. That's some old school coinage right there. It does seem to fall through the cracks quite a bit, considering all loot in D&D is usually so easily converted into gold or equipment at the nearest town or village. But I do kinda wish it would make a resurgence. Not just because of its nostalgia value as part of the original coin system of 1e D&D, but because it's a seriously legit currency. I mean, some of the earliest known examples of minted coinage in our real world were made from electrum - which is, in fact, a real naturally occurring alloy. Heck, even the tops of ancient Egyptian obelisks (and perhaps even the Great Pyramid itself) were coated not with gold but with electrum. 

It's easy to over-simplify some of the more mundane aspects of D&D, such as currency conversion. But I really think electrum deserves to hold its place in the system. But that's just my 2 c.p.

I typically use it, but I change all the ratios to 1:10 and have it mostly replace gold.

Electrum is literally an alloy of silver and gold, so placing the value at 1/2 that of a gold piece makes perfect sense. In the game I usually find them only in long lost hoards that we have discovered - an ancient dragon's hoard or something similar.

We just ignore it completely, mostly because it deviates from the 1/10 rule.

I'm pretty sure that I haven't played a D&D game since 2nd Edition where electrum coins were used.

A lot of people ignore it. When I am doing a hard cover I usually either give the value of it in gold. Or half of it in silver, and gold. 

I use it, sometimes. It exists as coinage in my world.

In my preferred campaign setting, each nation has its own currency and most of them don’t use Electrum.

I didn’t use electrum when I used coinage, and I’ve since abandoned tracking currency entirely in favor of a more abstract wealth score.

I don't use electrum. It's basically useless in my campaigns. 

Electrum Pieces are useless. If I ever give you one, there's either a thematic reason, you're dealing with wacky people with bad taste in coinage, or it's cursed and will kill you. 

I would guess most settings pretty much just decide to convert it to gold on the fly, so most folks just ignore it.

I would have no problem using it, but truly most folks don't really care how many gold, silver, platinum, copper and electrum pieces they are carrying.  They just track an amount of gold their coins are worth.

I always assumed they were like nickels, but they are more like 50 cent pieces.  I also learned today that rose gold is an alloy of gold, copper and silver.  Apparently 14kt gold is an alloy of gold and silver.

I think it would be interesting if each town had its "normal" currency.  Gold pieces in the capitol; silver pieces in a typical town, electrum pieces in some places, and stuff like that.  But then someone has to keep track of all the stuff, and most tables don't want to bother with that.

I was in a game that tried to micromanage how money worked in a similar fashion once.  It was discarded after one session because everybody complained about how much it slowed gameplay down without actually adding anything fun.

I have one character who likes using Electrum, and she gets a nostalgic feeling anytime she acquires some.
But she's a Far Traveler who's home was Halruaa, which has massive electrum mines, and it's one of their primary exports, so...

It's really helped me convert the coinage on the fly, so it never takes up extra time... and the party just gives me all the electrum coins, so they don't have to worry about them.

The DM occasionally throws in electrum to the loot pile, which also makes me internally happy.

I just use the regular coin values, though I'll sometimes describe coins to give PCs a sense of their origins (lands they're familiar with, lands they've never seen before, inscriptions not of their plane of existence, etc).  Exchanging bulk lesser value coins into gold is largely something that can only be done in cities (and sometimes gives reason to go to cities).  Cities also provide "banking" of a sort, PCs can even take work as a sort of Western Union and transport funds from one area to the next. Similar to Lyxen's Runequest note, some coins don't have currency in some parts of the world, but usually PCs can find someone willing to negotiate a bulk exchange rate where they're buying just the metal at a substantially reduced value, not the coin value, to be melted and reworked for other purposes.  Towns have similar systems but much less secure.  I don't bother with a sophisticated economy, but coin, ingots and gemstones used as currency are a thing in my game, sometimes a motivating factor for either PCs or "the big picture."  So since money doesn't really matter all that much mechanically in 5e, it becomes more a story element, so to speak, that I introduce or a PC can propose.

Electrum is there as presented in the books.  Copper and Silver are the main coins people do business in.  EP, GP, PP is high roller stuff for big deal trading and war finance.  I don't mind the math.

I think the idea of using electrum coins in a campaign is that they are obscure. Most merchants in a large city will be able to do the conversions pretty quickly, but if you try to pay your bill at the inn in a small town with electrum, you might have a brief debate over their exact value or if the innkeeper will take it. It exists for worldbuilding purposes. If someone is paying with electrum, that tells you they aren't from around here. There's a reason why the published campaign that makes frequent use of electrum is also the one that doesn't take place in the Forgotten Realms (or whatever world the players start out in).

Quote from Thucydides>>

It exists for worldbuilding purposes.

In PHB so isn't the Platinum piece.  Both coins are suggestive of "fallen empires."

If someone is paying with electrum, that tells you they aren't from around here.

Actually in my game, that's what Titanium and Uranium and Plutonium currency is for.  I''ve toyed with taking six EP and making boxes out of them that could be filled with Energon for Cybertronian currency in a world where Fiends somehow converted the Modrons and created the Decepticons.

There's a reason why the published campaign that makes frequent use of electrum is also the one that doesn't take place in the Forgotten Realms (or whatever world the players start out in).

Electrum has been around since AD&D if not Red Box D&D.  The idea that Electrum (and platinum) was otherworldly or past world currency is something put in as flavor inspiration sometime after 2E (if not conceived in 5e).  So whichever published setting makes a big deal of Electrum, it's just running with that inspiration to be a "different" world, tis all.

Let's also keep in mind that the various denominations discussed in the PHB, particular at the "large" level aren't necessarily coins. Rather the term gp is an abstraction of value that can represents ingots/bars, letters of credits, paper printed money etc.  2E they offered hacksilver as an alternative way to materially representing currency, but still used with the gp "mechanical" standard.  In other words, coin or representation of money can be whatever the game wants, the gp is sort of the standard to give a universal sense of some baseline worth for goods and services.  "The Party returns to the lair of their fallen Copper Dragon patron and finds 250,000 gp ... worth of abstract painting and sculpture, including some kinetic works. Good luck with that."  

I don't really use it, but when I do, my players know to pay attention. Electrum is always a clue. Either it'll lead them somewhere, or with an Alchemist's Kit they can convert it to gold to gain money, or the coins have been debased and it's an adventure hook.

The published campaign that makes use of electrum is Curse of Strahd. It shows up more often than in other campaigns, anyway.