I too prefer GOG, but the fact that they still haven’t made a native linux port of GOG Galaxy causes me to mostly use Steam. I usually use GOG for indie stuff and thingsI want without it being tied to a launcher or DRM.
Oh, and I recently bought Rollercoaster Tycoon 2 there, as I felt it was about time I gave Chris Sawyer some money for all the fun the pirated version I downloaded 25 years ago have provided.