I attracted a troll recently and it felt like an accomplishment. She wasn’t especially rude except to tell me that everything I said was wrong. She didn’t comment on my appearance or call me names or anything rude like that. She just explained patiently that I was as dumb as a stump.
As a result, I got several short articles out of it that I would not have written otherwise. So I ended up being very grateful. She did me a huge favor!