[Mz]

So your point is that women prefer hair because being bald is a social stigma, being an analogous process to the stigmatization of preferring small breasts?

I wouldn't put it that way. Some thoughts, since you kind of asked:

The main analogy I was making was that just as men who prefer smaller breasts don't necessarily go crowing about it, women who prefer baldness may also keep their mouths shut.

As for an actual reason to not prefer baldness, see my other remark in this thread about how "looks" are indicators of health: http://news.ycombinator.com/item?id=2409000

As for preferring older men: I think women prefer older men because they make better mates for a variety of reasons. Yes, for some women the financial success of an older man has a lot of appeal. But I really think it's a lot more complicated than that.

My recollection is that male pattern baldness is associated with hormonal stuff. So for some women I can see that being a reason to be drawn to it -- if it looks like the "genetic"/hormonal variety and not some indicator he's just not healthy.