For a lot of people, it's simply a reaction to the characters.
The personalities given to them are so strong and so 'human,' that they are thought of as people first and ponies second.
(FYI, this is also a common argument for the reasoning behind R34 so take that as you will)
Top Comments
Windigo With Salad
Feb 21, 2012 at 04:46PM EST
DeadParrot222
Feb 21, 2012 at 04:32PM EST