[Right. Not everyone comes from a war-torn wasteland.]

I guess not everywhere has ghouls. They're what you get when you take one human, a heaping helping of radiation, and something in them that refuses to let the rads keep 'em down. Some lose their minds, their brains rotting away in their own skulls, but most are just odd-looking folks trying to get by. The Brotherhood, though, they don't see them as human anymore. Maybe they aren't. That doesn't mean they aren't worth protecting.