global wwarming.. big deal..who should care

not that watso believes in global warming, but even if for arguments sake, on the odd chance that it turns out to be true, then so what!!!!!!!. the artic might be a pleasant place to live - and australia might be a bit warmer, and with rising sea levels, then much of austrlalia might be somewhat unpleasant to live in - but that could result in lower populations - but at the end of the day, the earth will self correct