AngryLittleAlchemist said:
curl-6 said:

Well, to be fair, it is also how we as a species propagate ourselves. ;)

It can also simply be something fun and pleasurable, a way to relieve stress, emotionally bond, and just enjoy one's self.

Everything in your second sentence goes back exactly to what I was saying. People immerse themselves in it out of a lack of completeness. If you were complete you wouldn't need such superficial happiness or emotional connection. 

Humans are social animals, there's a reason why we have such an advanced language.