I think for the right person anyone can change their wild ways. But there is no harm in enjoying yourself until you find the right one.
If you are going to marry someone be sure you love them. Marriage is hard and having kids together is even harder. (trust me!!!) If there isn't something (besides the height of the chic) to draw you together then your life together will be HELL!! No use living like that, it is not worth it. And not fair to the child either--- while having a genetically superior child is a benefit, having a mentally f'ed up kid is a huge draw back.
Do you plan on finding the perfect tall woman, marrying her, getting her pregnant, having the kid, then divorcing her and seeking custody? In many many states the father would have to be a saint and the mother a crack-whore before the father would get custody of the child. If you aren't in love but want a child-- hire a surrogate. You can select her based on your personal preferences, use your own baby batter and the baby is yours.
And as far as finding a "perfect" person to breed with-- I honestly think that is part of our genetic makeup. People of similiar looks/ characteristics tend to flock together-- I don't mean all blonde hair blue eyed people should hook up -- I mean beautiful people tend to attract beautiful people or smart people attract smart people. I think that happens for a reason--- it goes to that basic human desire to have sex, breed, to create a superior offspring.
-wendi