I don't know the answer but I can tell you this, physical attraction has a LOT to do with it. People always say that all they care about is the personality but the truth is that unless there is some sort of physical attraction it is extremely rare that one gets to experience the personality. Most women want a strong confident guy, most guys who fit that description (particularly the confident part) are physically attractive and have experienced success in attracting partners. A guy who is less attractive may be the nicest guy in the world but he is likely less confident so he won't generally start a conversation or if he does it won't come off properly (trust me on this one) and the potential partner will be put off by his lack of confidence. I'm a people watcher I have seen this in action with others and experienced it myself. I watched a woman walk around a bar giving lap dances to every guy in the place, she walked past me within reach several times, looked at me and walked away. Physical appearance is the only logical explanation I could come up with for this. I have tried striking up conversations but I get nervous and sometimes stutter a bit and come off sounding like an idiot and the lady walks away. It is natural selection.
