Just in case you decide to retort with something defensive, I might as well clarify a few things before you say some bullshit about x, y, or z.
I had / have bids at Phi Delta Theta, Pi Kappa Alpha, Sigma Alpha Epsilon and I regularly hang out with pretty much everybody from all three.
Fraternity life varies ENORMOUSLY from one house to another, and one school to another.
Show up, evaluate the situation and make a decision. You will hear the entire gamut of comments / advice from kids anywhere about how they love/hate/regret/wish etc...
Make up your mind for yourself bro, and if you made the "wrong" decision you'll be fine as long as you're a sociable guy and can get along with people. Hence, there is no wrong decision.
The only reason I didn't join was because I'm a lazy fuck and that doesn't bode well for an engineer who's already neck-deep in academic hell. I'd like to think that it's best being able to chill with whoever I want, whenever I want, wherever I want and being welcome in any of those situations. Who knows though, everybody's different so don't listen to anybody but yourself.