@Jet Cash, at first I agreed with your opinion, but after reading hilariousandco explanation... he is totally right. But I can't get rid of the feeling that somehow it would be good to have introduction thread. Maybe in the future...
My original idea was a new member introduction and questions board, and all new members would have to make at least 5 posts in it before they could move on. That didn't seem to meet with much approval though.
With regard to the comment about it becoming a large spamming thread - we already have several of those, and they serve absolutely no purpose whatsoever. Why aren't those deleted? At least an intro thread would serve a useful purpose.