I know, right? It irks me to no end when people mock anime. It's no different than anything on American television- it's an art form involving all the action, sexuality, and comedy in everyone's favorite everyday television shows. Some of the fans are a little obsessive, sure, but there's nothing WRONG with it. Nobody rolls their eyes at Family Guy, Simpsons, or South Park. Why should anime be any different?
I think part of the reason is the childhood experience. You'll find that half the people who criticize anime watched Pokemon, or other similar anime as kids, and base their biases off of the cheesy dubs and stupid plotlines of those shows without stopping to realize that other anime exist without such concepts.
... Sorry. I'm kinda ranting now...
My dad watches anime, to a degree.
But I don't see him liking Ouran... |D