Literally everyone believes what doctors and nurses do is ethical. Public defenders, absolutely. Nobody has an ethical problem with artists (i.e. entertainment)

Literally everyone believes what doctors and nurses do is ethical. Public defenders, absolutely. Nobody has an ethical problem with artists (i.e. entertainment) -- musicians, actors, writers. Being an educator is a highly ethical profession. Research can go either way; most would consider research on biological weapons unethical but research on vaccines or cures for disease or basic research quite ethical. I don't know who you are talking to but you've just listed a huge number of very ethical professions and said "who considers any of these ethical?": the answer is literally everyone. Everyone considers at least one of those fields ethical. Ethical doesn't mean you sacrifice your life to help starving children in Africa. Ethical means you don't do things that are evil. The surprising thing is that bright business students are now deciding finance doesn't satisfy that criteria. I mean if you want to pretend it's all about some evolutionary psychology mate selection criteria that's fine but the cause and effect work the other way. Nobody wants to mate with an unethical person; if they're willing to commit unethical acts and screw over others for money how could you ever trust them with a family or not to cheat?