And it's funny because the "realism" has been proven wrong over and over and over again for millennia. People do all sorts of selfless and generous things all the time! The entire premise is trivially disprovable by just going and asking a neighbor for some help with something.

That's not to say we should be naive about greed or malice existing or being powerful motivators (especially the former), but it is obviously not true that they're the only forces at play and therefore you are "just doing the logical thing" by succumbing to them. It's just the more destructive version of the same naiveté.

This was not my point at all. Maybe I could explained better, but main criticism I have is: you can bundle together objectives ( which are inherently good ) and create an utopia. But those cannot always be achievable.

Everything in life in trade-offs. Simple example is speed/quality/cost. I can tell easily:

- services should be cheap - services should be fast - services should be high quality

Now I created an utopia. Obviously this is amazing to listener. They agree. But is it achievable?

It is not saying greed is good or might makes right. But system means you need to construct from this ideals best outcome ( which comes at some trade offs)