Our entire ego and existence is just a little game of optimizing the reproduction fitness function, generating offspring and guaranteeing good upbringing to them.
Our entire reward system centers around that, we aren't different than animals at all. The closer the distance of some action to the outcome of generating, raising well and protecting offspring, the more good it feels.

For example sex, specially cumming raw inside of pussy, is the best thing that you can feel(other than drugs which are just cheat codes). Other actions that influences reproduction also makes us feels good, but less so, its directly proportional to how direct the action -> outcome of sucessful reproduction it is.

In other words, its a just a little simple game, everything that we consider our self/ego is just centered around those basic shitty principles. I can code something similar that follows those principles in a day, like this guy did https://www.youtube.com/watch?v=y1bvBjYMbrg
All of this is pathetic