[skibidithink]

This is exactly it.

I don't buy someone lunch with an implicit expectation that they'll buy me lunch in the future. That's tacky and gross. I buy lunch because I wanted to buy them lunch, and if they decide to buy me lunch, I happily accept.

[cteiosanu]

Means you're not in the "many" segment. Doesn't mean many others are not in the "many" segment. I, myself, find reciprocation important even if not for identical "gifts".

[skibidithink]

I often reciprocate. Receiving a gift triggers some warm fuzzies and I try to make the other person happy as well.

If they say or act as if there's something expected? I'm returning that "gift". That's a bargaining chip, not a gift.