Now this was so convincing

Yes, you are trying to convince me that being selfish and thinking of yourself is a good thing and should not be frown upon

with all of the basis given, I think I am convinced

But wait, how does helping people outside the circle of friends, family, and neighbors help us?

Oh you already answered that....it will give us an amazing feeling and probably a sense of pride if I am allowed to add something

well, now I know you do have a brain because you have been able to use it properly to instruct us on the issue of ego

well done.