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.
This. They were the first thing I thought of when thinking of useless.
I have ad-blockers to filter out crap. Now I need influence-blockers.