Same. Minigalaxy bridges the gap a little, but it's missing critical features that only GOG could implement. GOG have had Linux gamers pestering them for Galaxy on Linux forever. Seems like a natural fit, but they've ignored it, teased that it's happening, ignored it again... I eventually gave up and went all-in on Steam. Valve have done everything they can to make Linux a class-A member of their ecosystem, so that's where my business goes.

I only game on Linux and I haven't really had any major issues. I use Lutris as well, but I'm also not really playing any games which get updates either.

While I'd love something like a Steam client for GOG, I doubt it's ever going to happen, and personally I don't really like Valve/Steam either so I just don't use Steam.