Why does anyone have $100 bills?
Unless you're a drug dealer, you have to make a special effort to get them from a teller, but why would you?
I used to know a couple of guys who carried a few, but that was just to flash, because they're a pain in the ass to spend.
It seems to me that carrying $100s is really a trailer-trash kind of thing to do, like wearing a gold chain, or a pinky ring.