> A human is basically testicles with a brain attached

> The more different the genetic material is, the less you care - individuals of different culture, of different race, of different species, of different kingdom of life, and finally viruses that are just strings of RNA floating around and nobody advocates about their rights because fuck that

The type of mental model that ignores 50% of the world's population due to having that same proportions of chromosomes not matching one's mental heuristic of what constitutes a human is what I'd say "fuck that" to, personally

>The more different the genetic material is, the less you care

This is sort of true but it misses that we don't actually have DNA sensors built into our eyes. Instead we rely on heuristics like the Westermarck effect where we will (normally) tend to not find someone we lived with as a child attractive regardless whether they're a blood relation or not.

We influence who (or what) is in our group through our behaviour, thoughts and associations. Look at the vast number of people who value their dog or cat over other human beings. It's unlikely their dog is closer to them, genetically speaking than any single human on Earth but they spend time and invest emotionally in their pet so they form a bond despite the genetic distance.

If you see a child being hurt it likely invokes a slightly stronger emotional response if the child reminds you of someone in your own life. Often this will be someone who looks like you/your family (i.e. is genetically similar to you) but it might be some other kid you've grown attached to who is not related at all.

So yes, we are driven by a calculating selfish gene mechanism but we're also burdened/gifted with a whole bunch of emotional and social instincts and rely on imperfect sensors not tricorders. It's why people can form group identities over all sorts of non-genetic characteristics (e.g. religion, nation, neighbourhood, sports team affiliation, political ideology, vi vs emacs, etc).