It's interesting, all the changes your body goes through during puberty. Basically changing from a body of a child to that of an adult. Something that happens to everyone at a certain stage of their life whether they want it to or not. Some changes are easily understandable as to why they occur, such as muscle and gland development. Up until the onset of puberty there isn't much difference in the outward appearance of muscle groups between a little boy or girl. After puberty begins, naturally, the muscles start to develop more, as they'll be needed to handle the loads an adult man or woman will place on them to carry out their responsibilities in life. Same with glandular development. Without the maturing process during puberty, procreation and breast feeding, for example, would be impossible. All these changes and others our bodies go through during this time, it's pretty obvious as to their purpose.
One change that occurs has always puzzled me, however. What I've never quite been able to reason out is, why all the extra hair? I mean, other than being a guy and wanting the facial hair to grow a mustache and/or beard, or grow your sideburns longer, I'm at a loss as to the real purpose of the extra hair sprouting at various places on the body. For instance, take the genital area. One place where many of you regular diaper wearers prefer not to have hair growing. What is the hair supposed to do? It's not long or thick enough to really hide anything, as if to make your privates even more private. Then there's armpit hair. Most of the time your arms are down anyway, so what purpose does the hair serve. We don't have kneepit hair. Maybe because our legs are open most of the time and somehow hair is needed more at a joint that's closed more often?
The extra hair growth doesn't stop there. As you continue to age it sprouts up in other undesirable places such as in/on your ears like woolly worms and antennas, and growing out your nose like an ingrown mustache.
Maybe I look too deep for an understanding of why all the hair growth. Maybe it's so obvious I'm completely missing it's purpose. What's your thoughts on the subject? Perhaps you all can provide the logical answer(s) I've been looking for.