How do you guys handle it? Are here anyone who only plays Bethesda games and is happy with that?
Bethesda games take about half of my gaming time, a huge chunk of the rest goes to Paradox Interactive, then there's about 15% left for everything else. The thing is, most games are very short compared to TES - even the long ones take 50-60 hours at max, while Skyrim easily takes hundreds. I've never felt bad for spending so much time in Tamriel either.
My advice: play Skyrim to your heart's content and don't worry about other games. Sooner or later there will come a time when you get bored, tired or simply craving for something new, and that will be when you naturally leave Skyrim and move on to something else.