You guys can ponder all you want but from my experience hair or the lack of it plays a very small part of the equation in all aspects of your life. The most important thing is "what comes out of your mouth" and how successful you become in life. If you are conceited,narcissistic, boring, selfish, negative and have hit all genetic lotteries, you still are not going to attract a big crowd. You will tend to attract people just like yourself and that can get "ugly". From my experience, height seems play a much larger role for people in life than hair. Weight does too. Hair and hair color( ie gray hair) helps give an idea about someone's age more than anything. We associate losing hair with getting older i.e. age.
The bottom line is stop concentrating on what women want in YOU but what you want in WOMEN. Although I did have low self esteem, ironically I did most of the rejecting all my life. I never had a problem attracting women, it was I had a problem attracting women with emotional stability and the ability to engage in intelligent conversations that are deep and nonjudgemental. And if they were overweight or chunky and not petite, they got rejected no matter what. I think weight is something that can be controlled. Losing hair is very hard to control.
For you young guys who think you need hair to form a relationship with a women, you are wrong. Oh, and if you want sex, go to the bars and wait until a hot girl has a few drinks in her and then go for it. If you she wants a one night stand and you are charming, funny and confident, you will get your one night stand as long as she has enough alcohol in her to alter all her normal limiting beliefs that you think she has( i.e. she will only be with an alpha male). Now getting back to relationships, if you think they are picnic in the park or a fairy tale happily ever after, you are living in a fantasy world. If relationships were so wonderful, divorce would be non existent. The only relationships that will work are those with great communication,trust, honesty, the ability to engage in intelligent and deep nonjudgmental conversations and never lack creativity in the "bedroom". If you can find all those things and think hair is your key to find it, than you are delusional. Does hair=a happy relationship? You be the judge.