[DocTomoe]

You'd think the natural result would be 'This was horrible; this trainer is a psychopath. I am not going to do that to another human being.'

But then, we're talking about humans, especially the violence-enjoying strata of humans here.

[initatus]

That is the natural result. They're selecting for people that don't have that reaction, or those that can suppress it.

[lofaszvanitt]

Just like chefs... a lot of lowlives lurk there too.

[munchler]

Wut? How are chefs like waterboarders?

[hnav]

presumably they were abused as line cooks or whatever and once they make sous chefs they become abusers. Similar dynamics exist in jail, in fraternities, etc.