Look, I'm an atheist so I don't believe in evil. That being said I'm not 13 so I also don't have a hard-on for Ayn Rand to the point where I get enraged when other people talk about self interest.

I never said anything about it being "inherently evil". You're putting words in my mouth. You'd realize that if you actually took some time to cool off.

In the context of D&D, how self-interested a character is determines their moral alignment. It's a loose description of a mechanic.

No one is making claims about the real world.