Because by now you must have already noticed that society has some basic patterns that repeat all over the world, even without the presence of "globalization" and that this patters have some sort of reason to be, given a context that is repeated in the regions. But come to think about it, things like a patriarchal paradigm imposed in almost the whole world, the youth versus old conflict and the fight of the minorities can all be explained somewhat easily by biological impositions and natural ways of behavior. But what about the details?

What about the fact that we love story telling so much it drifts into gossip or novel writing? Why is it a necessity to interact with familiar and new people, and it is actually of high status to be acquainted with many many people, why do we praise so much having a large network? Why is it that the life of others interests us so much, both their tragedy and success (although more often one than the other).

Because if it is something that can be seen everywhere there is more than one person (in case of lack of multiple personalities), so it can't be all that "cultural" as it is biological, something in us is wired so that me love gossip, partying and scandal. But what in the world could make that socialité apes thrived in the crazy dance that natural selection often is. What advantage was brought from all this networking, and more important, what advantage was formed in a beginning by being able to form groups with the sole purpose of screw others?

I can understand alliances were needed to win the fight for survival, and that the tighter a group was, the more likely it was to survive. So where do we stand today now that we are fully evolved civilized, unlike apes, and don't need to fight over territory?... oh... wait.