Update:

There is a logical reason for men liking ponies, the creator of the show is the creator of both Powerpuff Girls and Fosters Home for Imaginary Friends, which our generation grew up with. Thus My generation= loves ponies.

Ditzy Doo and Derpy Hooves are not the same pony, for some reason, many fail to notice that a pony that has the same cutie mark but different hair than Derpy appears with the birds in Winter Wrapup, Due to previous conversations, it can be assumed that this is Ditzy. Due to not only being a recolor of Derpy but also having the same cutie mark, it can be assumed they have very similar personalities and are most likely twins.

More later!