I'm usually stuck on IPAs, too. I try to make every second batch something different, though. Right now I have on tap: a nut brown, a "fizzy yellow beer" for spring/summer, a rye IPA, an American amber ale, and an Irish red. There is an IPA in secondary.
It's fun to make different beers, as long as you make something you like! I try to have a variety of malty and hoppy beers, because occasionally I'll have a hankering for something different.
I dislike fruit and wheat beers, as well as sour beers but there are still plenty of styles to pick from!