Here's my experience with Frats..
Some are super bro'd out and are totally lame to the fullest extent. Basically just acting as a bunch of party fucks who live life to get laid and prey on 'bitches'
The others are totally chill, relaxed, and not so ridiculous. Partys happen, sure.. but most of the guys there are halfway geeky, and spend more time playing video games than getting 'yoked' or being all macho.
A few of my really good friends have been frat members, and I've dated a sorority member (didn't work out, but it was mostly because I moved away, more than anything)
It really just depends on what the greek life is like. At some schools, it's also far different than others. Most of my experience has been between bay area campuses, like San Jose State, UC Berkeley, and that of UC Davis and Sacramento State. All four of which have huge differences between their greek life, and none are more than an hour away from each other.