Couldn't have said it better myself. I didn't particularly identify with either side of the divide (or rather, I identify with parts of both sides). I'm usually not the life of the party, and I'm far from great at small talk, but on the other hand I tend to go absolutely nuts if I'm alone for too long.

I don't doubt that the divide is real, but as with most behavioural traits I suspect that reality is more of a spectrum, with the majority of people falling somewhere towards the middle.