This is a dark view, indeed, but not logical no matter what "evidence" is marshalled in support. We do many things and they are by definition "natural": that doesn't in any way imply mandated by genetics. Were the positive and beautiful not basic, we wouldn't be here by now. Human beings are by nature whimsical, in my view: we love to laugh, dance, sing, draw, paint build, make music, share, enjoy. I have watched movies in an almost deserted theatre, but I can't say I actively enjoyed the experience. I have eaten meals alone and didn't enjoy that either. In the final analysis, the cruel mean, petty people are their own punishment, in my view; it is better to be on the receiving end than the perpetrator. Small comfort, but it is comfort. I will always believe the system in general makes people what they are. You can change though, if you understand what is ruling you and why.