? O.o
Sorry, I'm just not understanding the whole "Brony" phenomenon.
Okay, in short, the people that write the show actually put some depth into the characters, the visual style is excellent at conveying nuances of emotion and expression that add to the humor of the situations, and the script-writing varies from silly to surprisingly intellectual for a show like this. They also love to throw in little easter-eggs like background ponies modeled after the various incarnations of Dr. Who.
All you have to do is get past the occasional bits of Anvilicious "Moral Education" that all kids shows are required to have, and remind yourself that you're not any less of a man for laughing like hell at a character named Pinkie Pie.
If you've seen the show and don't like it, cool, but watch two episodes before you judge.