Lawyers: I don't actually know shit, but I can think nonlinearly and solve nuanced problems. I'm fun to party with, and your wife secretly wants to fuck me because I can flirt better than you can and know how to make eye contact. My liver or a jilted wife/lover will eventually kill me.
Engineers: I can solve every problem on earth better than anyone else, no matter the context, so long as it is black-and-white, with no nuance. I could be a great lawyer or doctor if I wanted to be, but that seemed too easy, so I stuck with trade school. No one wants to party with me, but I've made some cool friends, usually by building things that explode, and I occasionally get invited to parties where I end up making everyone else uncomfortable. Your wife doesn't want to fuck me unless she, too, is on the spectrum. A miscalculation and some hubris will eventually kill me.
Doctors: I studied one thing and do one thing really well, and I think that means I know everything about everything. I should probably run for political office. No one even invites me to their parties, unless they want to ask me to invest in their latest venture. Your wife doesn't really want to fuck me, but she still thinks about it in the context of being my next wife and enjoying my big house and frequent vacations. I'll live longer than the rest of you, but I'll spend most of that time focused on a weird collection or a hobby that I don't really enjoy but makes me feel artificially masculine, like fishing or motorcycles.