Philosophy Versus Science

[Sheldon]

The idea that it is good to be useful is of course a philosophical idea. 

(etc.)

Like so many other philosophers, you seem to be over-thinking this.  I meant useful in terms of priorities, not in terms of good versus evil.  

I studied "wisdom" literature for a long time in my life.  I concluded that most of it depended on the idea that God exists, which was left unsupported.

Good seems like a subjective term here, what the Nazis viewed as good, or ISIS, wouldn't mesh with my own subjective world view. A degree in philosophy focusing on morality and ethics, wouldn't change that I suspect. 

Ironically an understanding of evolution might, understanding how alike even the most disparate humans are, how little we differ. Though of course one would first have to care more about what is objectively true, over subjective ideology, but that's how science is designed to work.