Actually, this is an interesting point. So, do you believe that social needs are "natural" to humanity ? From reading your posts, I kind of think that you do, and I agree, too. But, then, why would the outgrowths/ramifications of our own social needs not also be natural ?
One could even go so far as to say that selfishness causes the need for socialization -- which may (or may not) cause something such as kindness (at least according to some theories out there
) -- so, in fact, selfishness is perhaps a cause of kindness ? And if kindness is an illusion, perhaps then, it's more approrpriate to say that selfishness is the cause of illusion ?
*just thinking* 
Yes, that's what I mean, and I have to point out that selfishness is absolutely a good thing.
It's interesting, human being are by FAR the most social animals, and if you observe other relatively social animals out there - they have similar mechanisms, only more simplistic and immediately apparent.
Grooming, bonding, they do it for themself, but their desire to fit into the scheme benifits the whole species.
So, if human being have an innate *purpose*, that purpose is inextricably of a social nature - human being belong with other human beings and the greatness we achieve as a whole is what defines our species.
Well, society seems to be based on people suppressing thier natural urges... such as rape, murder, theft, etc. Seems to be the basis of "civilized" nations, not doing whatever comes naturally, to a certian extent anyhow.
Well..yes, rape , murder and theft are only 'bad' because of their social consequences..or are they.
Think of a world with just you, and an annoying attractive woman who has many riches and keeps them to herself.
You could rape her, you could steal from her, and you could also finally kill her because she is so annoying, there would be no terrible consequences other than in your own conscience..
The three main basic urges are to reproduce/have sex , have food/water, and territory/shelter.
In a society we have evolved to work with eachother and not against eachother to fulfill these basic desires, aswell as the desire to socialise itself!