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Still, if I get the chance someday I'll try it. I could probably stand it for a year and hey -- $100,000.
I have the opposite concern about one-trick ponies: there are certain things I enjoy drawing very often (it's probably a symptom of my autistic tendency towards obsessiveness), but I'm scared that eventually people will tire of my favorite subject matter and demand that I draw something different. In my case, I worry that being a one-trick pony will hurt rather than help my popularity.
Everything is better with dinosaurs.
If an artist is afraid or unwilling to explore, as am I into their work. Don't mean they wont make bank, just means I wont be watching the piggy.