@Moon Ah, you're just always nice, that's great, just there are people that are overtly hostile and not worth dealing with, and you seem to have way more patience for them than I would. (I don't know if anyone specific prompted this lately.)

Reciprocity calculations make things untenable. Someone that kind of encourages that is worth avoiding; like, someone that keeps score in personal relationships ends up either exploiting you or causing you to keep score, neither of which is desirable. Passive-aggressive behavior is a form of hostility.