I am not exactly sure why this is myself, I happen to be one of those people. They seem to be more genuine to me. They don't play all the head games, you can have intelligent conversations with them, and for some reason I just feel all around safer with them (not that I have had experience with any relationship wise). Maybe we just have some daddy issues (mine was in Vietnam and has not stopped drinking since), or it could have been that time that my friend and I went on a trip with his godfather and his godfather's "friend" when I was about 13 years old and suppressed memories in regards to that (my parents didn't know and i was gone all weekend, boy where they pissed when they heard).
One of the pharmacy managers I used to work with told me I had the maturity of a 40 year old and maybe that has something to do with it, anyways I just know that sad as it may be I have thought about asking someone out before just because I saw how sexy his dad was.