No idea why they prefer to be called bronies to pegasisters...personally, I found the term endearing and unique.
Perhaps it has something to do with the social-community mind and not wanting to be seen as "outsiders" from the larger brony community.
...Or just wanting to be 'one of the guys'.
![Posted Image](http://chzbronies.files.wordpress.com/2011/10/my-little-pony-friendship-is-magic-brony-come-join-us.jpg)
Edited by Damon Howe, 11 March 2012 - 08:18 PM.