So I just realised that there are a bunch of things that I never would've bought in hardcover that I own here. The Tortle Package, Guildmaster's Guide to Ravnica, Wayfinder's Guide to Eberron, Rrakkma and Lost Laboratory of Kwalish. I would never, ever, ever have bought these otherwise. But on here, it's both so cheap and convenient that I'm like, "Eh, may as well."

How 'bout y'all?

Well I buy everything here Dropbear, but I might also buy a actual dead tree rulebook but not an adventure unless said adventure came with rules that aren't found in another book. 

I wish we could buy the art and map books here too.

I'm in a similar boat to you. I wouldn't buy any of the adventures, but I do here. I wouldn't have bought Ravnica either, but I wanted the preorder character sheet boons so... I guess Loxodon is worth it? But yeah, I buy waaaaay more things here than I would ever buy a physical copy of.

All of it?

I don't actually have any of the 5e material in physical form - but that's not unique to RPG material. I don't own many dead tree editions of anything anymore.

In the age of the smartphone, we're seldom - if ever - disconnected from a network ( plus I think the Android App allows offline access ), and digital formats are searchable and cross-link-able.

I think I have a full set of the material here: I started with the Legendary bundle.

Everything. Because it's way easier to transport a laptop than ....everything else.

I think buying adventures here is best vs buying as a hardcover. much easier to navigate and never really needed as a general reference like many other boks.

Literally all of it, hahaha. I own core, Xanathar's, and Volo's in harcover, and honestly I'd return half of Xanathar's if I could lol. But everything else, I wouldn't even purchase on here. Between all the 2/3/3.5/4e books, Pathfinder modules, and an internet full of playtested and passion-driven homebrew materials, there's nothing that one can buy that doesn't already kinda exist. Put it this way, if my players want to play a turtleman that hasn't already been homebrewed or designed by one of the decades of WOTC publications, then they can buy the damn Tortle Package on their own lmao.

I have the legendary bundle and love it. But like others have said, I don’t know that I would buy all the adventures.

That said, I am in the process of purchasing all the dead-tree rule books. I wish I would have kept my AD&D stuff. It would be nice to have to look back on and remember the good times. So, I have purchased most of the paper rule books too. I haven’t decided on the adventures. They may remain in the realm of the digital. 

I likewise own the Legendary bundle. I have also bought everything else except Ravnica. I have bought those part of that I wanted, the rest I don't need. The ability to open different parts of a book in tabs is a godsend when DM'ing.