On the one hand I like GOG because it has no DRM and has better prices (in my country) than Steam and I have the feeling that on the one hand it follows more the open source philosophy than Steam itself, but Steam has helped enormously to play Windows games on Linux, so I haven’t really made up my mind.
On the one hand I want to buy on Steam for the convenience, but on the other hand I prefer GOG because (in my country) is cheaper. Which platform do you prefer and why?
To give an example, The Binding of Isaac: Rebirth is currently $15 on Steam with regional pricing, but on GOG it’s worth just $6.
Steam, I can install the Steam client without any problems on moat distros, also Valve has done a lot of things to make the Linux gaming better.
Gog doesn’t have a desktop app for Linux, they’re focused totally Windows so I don’t care about it.
If I want “DRM free” games, then I pay for the original version with DRM and then pirate it to play whenever I want.