The human brain responds positively to a full head of hair, and less positively to balding. I'm not sure why, as it seems there is no huge evolutionary advantage to hair.

However the way the brain responds to it is incontestable, and no amount of body positivity will change the impact it has, thus for an individual it makes much more sense to pay a few thousand to conform to beauty standards than hope that everyone you meet will turn off their primate brain when interacting with you.