What's In a Kiss?

So one day my mom came over and gave me a kiss. It got me thinking. What really is in a kiss that we want to do it with the people we love? I mean, why don't we want to match our butts with our friends and family. Maybe some people do.

Maybe it is psychosomatic. Maybe the happiness we feel from eating is associated with the happiness from kissing? As babies, I know our mouths are the most sensitive body part and that's why they try to eat everything. Maybe it is like smiling. Even when you are sad, if you smile, your brain is tricked into thinking you are happy.

But then again, do we associate kissing with happiness because ever since we are born we are kissed and told to give kisses. We are obviously taught that kissing is a good thing that you do with people you like. Seeing that every society I know of kisses....well, you'd think it would have to be something more than psychosomatic.

I just wonder if a baby never saw kissing happen and wasn't taught about kissing, whether or not that baby would kiss people he/she loved. I totally think that if you let a male and a female live on a deserted island (and they didn't die of various other problems), they'd end up populating the place. Just don't know if they would give each other pecks all the time.

There is probably some viable scientific explanation that this layman just does not know, but it still amuses me every time I give someone a peck, as to why I do it or I want to do it. I think however it is one of those "Chicken or the Egg" concepts. The world may never know...

(Side Note: So in looking for pictures to place with this post, I found a few articles with possible theories as to the origin of kissing, but the overall conclusion is that we may never know. I must be a genius!)