There's a picture of him at the link. He's no weightlifter, just a sort of aging hippie who looks like he's seen some hard days. The daughter is very cute though. It takes all kinds, and he doesn't seem like a violent or bad person, at least from what we're given in the story.
But, if I had gotten paid $400/wank in my 20's I'd be a millionaire.
Well, I don't know what to say. In light of seeing this picture, with the knowledge that he's one of the most popular sperm donors around, I retract my earlier comments, and submit this as a replacement:
"Women are freakin' crazy".
Actually it was wanking twice weekly for $400/month. So it was more like $50/wank.
Still a millionaire? (Yeah, I'd be, too...)