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.
First of all there’s one huge misunderstanding I see lots of people making, Steam does not enforce DRM, some games on Steam are also DRM free and you can just copy the installed folder to another computer without steam and play them, in fact games that have DRM announce it in their page.
But also some games on GoG have DRM. So long story short, both Steam and GoG sell games with and without DRM, but only one of them tries to bullshit you about it.
I buy from Steam 100% of the time (except for games I get f on Humble Bundles or stuff like that), my reasoning is that the money I give to Valve is being invested in making games run better on Linux, and since I use Linux I have a vested interest in seeing Valve improve that. That being said, if I was in your shoes and games were half the price on GoG I might buy them from GoG, but the lack of an official Linux launcher and no cloud saves is still annoying so some games I might still get from Steam.