An argument can be made that all actions people take are for their own self-interest. Even things like helping the community is done for reciprocal benefits for yourself plus the general increase in respect.
Another point is that if all people just act for their own self-interest, they will have a better life themselves, and if everyone does the same, some sort of proper balance will be achieved.
I have been having some occasional discussions with my friends over this. I personally disagree, but would love to hear what others have to say. Feel free to discuss!
Absolutely it is, and it even seems to be hard coded in many non communal species, like the wombats that open their burrows to other animals during Australian wildfires, but empathy isn’t powered by the idea of reciprocation. It’s an inherently selfless feeling that doesn’t consider either direct or indirect benefits for the self, and it doesn’t make sense to say that acting on those selfless feelings, against your self interest, is itself selfish.