Male pattern baldness seems to be influenced by a bunch of genes, but the most significant seem to be Y chromosome linked. My dad was bald at 24. His mom was bald when I knew her.
I'm 44 and no signs of baldness yet. I'd be OK with it, since it would give me a good excuse to shave my head. My wife doesn't like it when I shave my head. She says it makes me look too scary.
I look like a retard bald. I shaved my hair off last year and was not amused. Trust me, I would LOVE to just shave it all off. Unfortunately, I got a frickin retarded shaped head so I'm gonna have to hang onto this as long as I can.