I've been a Steam only buyer for a long time. There are so many cool features and extra stuff, most games work out of the box, and they've been putting in a lot of effort on the linux scene with proton and the deck. But even despite all that, I'm starting to move to GOG. The sad truth is that you don't own any of your games on Steam. I've been having more and more games be removed from my library, and games that either just don't work or are "updated" into something worse. Not Steam's fault really, but GOG is much more consumer friendly and I actually get files I can use and keep forever, no required updates or DRM. I really like Steam, and am having a hard time leaving it, but GOG is just the better choice from a long term and consumer ethics perspective.