How to make other people pay for your stuff

[CoccoBill]

No. There's a spectrum of consideration, intelligence, and scope of perspective. There is no difference in selfishness.

That definition is your own. You might have your reasoning behind this decision but it is not based in science.

Explain to me how any living thing can choose against its self interests?

By conscious decision. The neocortex has the capability to override the selfish urges of the lizard brain.

You're twisting this a bit. I'm saying selfishness cannot be either good or bad, unless identity is equivalently good or bad.
But otherwise, yes, exactly.

Again, not the scientific view on things. If one also took the hypothesis about no free will at face value, your argument would be sound, but I would say that's not the case. Of course you'd still have to define selfishness as only involving the urge or motivation to survive, and separate all actions based on those urges as something else.

IDK what they see, but what they are allegedly saying on this subject is full of crap and virtue-signalling.

If a anyone (psychologist, sociologist, or otherwise) is telling you to stop doing things in your self-interest, but tells you that doing so is in your self-interest, then that person is a charlatan.

The scientists/science are wrong and you are right? If this has been your banana-impersonation, you got me.