I've also got a bootie that puts J.Lo to shame.
I think it's just crappy luck.
"Put JLo to shame". That's impressive in my book. I see women that have more super bubble than JLo and Serena, but they aren't common.
You can control your luck to some degree. I pointed out that your belief bulge plays no role is flawed.
I must admit I'm a bit surprised at your luck though. I would have thought small dicks would avoid you more often than not, since from your description of yourself you would give the impression you are designed for more physically.