Ignoring your distasteful name for a moment; you have a very black-and-white view. 2 person job? Said who? 1 person sex, or 3 person sex, or more... Who says 2 is the only or even the best way?
I won't even point out all the reasons your argument doesn't make sense, because it's clear you haven't thought about what it would mean if what you said was true. It just doesn't match up to real human behavior.