Are there any occupations you uniquely oppose the existence of?
I did retirement home training and used to think it was a sweet job. Then I got in the business and underestimated how demoralizing it was as they give you the easy elders in training while the others make you, or at least me, really think of the fact the job just amounts to an unkarmic freebie.
I'm not sure I do, but one thing I haven't seen mentioned here yet is consumer psychologists. I once read an argument that they could be improving people's mental health, instead they are working on manipulating people into buying more.