Why do lovers kiss?

put their mouths together, sucking each others' lips or tongues,

Hehe. My gf sometimes asks this. It is true. It is a fairly arbitrary thing to do. It's like asking "why do we smile when we're happy". What is it about being happy that causes those muscles in the face to pull our mouth into that shape? We just associate it with happiness. But what if it'd been the other way around and when we frown we're happy and when we smile we're sad.

Your faces have to get very close (allowing someone to reay invade your space)
You have lots of nerves in your mouth so it feels really stimulating
You get to give and receive pleasure at the same time
You can get all hot and carried away and let it lead to something else
It shows that you want each other and so it feels nice to be together

And yet, Inuits kiss with the nose. 'Kissing' denotes an activity, held by convention to infer a generic state of mind which is receptive to further intimacy: it is a mere placeholder, if you will; a social construct, and one that could, similarly by way of convention, be substituted with another whose ostensible manifestation was entirely different (albeit stigmatised to like effect). The pleasure which I, personally, have tended to derive is invariably emotional and psychological in nature; having more to do with the 'fact' of the kiss, than with any biological stimulus. It is, in essence, a social practice; albeit one highly evolved, and with relatively distinct connotations.

And yet, Inuits kiss with the nose. 'Kissing' denotes an activity, held by convention to infer a generic state of mind which is receptive to further intimacy: it is a mere placeholder, if you will; a social construct, and one that could, similarly by way of convention, be substituted with another whose ostensible manifestation was entirely different (albeit stigmatised to like effect). The pleasure which I, personally, have tended to derive is invariably emotional and psychological in nature; having more to do with the 'fact' of the kiss, than with any biological stimulus. It is, in essence, a social practice; albeit one highly evolved, and with relatively distinct connotations.

Star prize to the first person to successfully de-jargonize this statement.

I mean why do lovers(not necessarilly 'lovers' though) put their mouths together, sucking each others' lips or tongues, as a way of expressing love? Has any of you ever had the same questions? What kind of weird species human has evolved into should kissing become part of human instinct!

Is there any possibility that you make such a typical Profesh-y statement before approaching your gf's mouth ...

Kissing's lovely, so long as you've got someone that knows what they're doing. There is nothing less attractive in my opinion than a guy that just sticks his tongue in your mouth and then tries to eat your face. Na-ah.

Slow and soft... hell, it's just a damn sexy thing to do! lol.

Hell I wanna kiss someone now lol.