Whether you believe the alarmists like Al Gore telling every one you need to live in a card board box, for the sake of his elitist friends and pay all of your income in carbon taxes, or the outright liars who claim Humans have zero affects on climate change:
One thing is for certain, postulation about whether or not it is actually a bad thing to have the earth warmer or colder isn't something either side seems to acknowledge because obviously the earth during the last 250,000 years of human existence has been way hotter and way colder than it is now.
Further more, I am more worried about plans to INTENTIONALLY overload the biosphere with idots thinking a complex multi billion year old planetary biosphere is as simplistic as what they create in the lab and draw conclusions on.
I mean crazy bat shit conclusions like spraying the atmosphere with aerosols or sucking the CO2 out of the atmosphere on purpose.
THAT is what scares me, not global warming or cooling or whatever you believe.