Being a professional designer of fantasy role-playing games (RPGs, as they're called by people like me), I play them a lot. It's a great way to find good ideas to steal. Plus, I can write them off.
During my recent intense bout of this market research (heh!), I finally came to terms with the fact that, after 23 years of playing them, I hate fantasy RPGs. I hate them, and I hate myself for making them.