"Frat", derogatory?

[Emilitab]

I agree that "frat" can be an offensive term. Before I became familiar with Greek Life and the activities and duties each Chapter has, "frats" just seemed like the place to go where cool parties were. Animal House and wild parties come to mind with the word frat, as opposed to fraternity which encompases everything from brotherhood, to philanthropic activies, to everything else that is included in Fraternity life.