No better way to learn and get used to it than ripping off the bandage and being forced to deal with it. That's what I did. Been Windows-free for ten years. If you still have a Windows partition around, it may be too tempting to just go back to it when things get a bit hairy.
As far as games, yeah, it sucks that I can't play some games, but I've filled that time with more productive hobbies. I can program C and C++ now, self taught on Linux.
But the more people that jump ship, the more developers will target Linux, so it's just a matter of time now before you can play anything again. It's definitely a 1000x better environment now than when I switched back then.