Why do we need to bother stopping Global Warming?

I'm going to get a lot of flak about this, but here's my view: Global warming does not exist! It is a lie put forth by these so called "green" companies and other environmental zealots. There is just no genuine proof of it at all. How arrogant are we to believe that we can cause something like this? Mother nature has been dealing with it's inhabitants for billions of years and has been through many things. She can cope with our short-comings.

we have to be worried as it heats the whole earth werent you not worried

G'day mate, hmm lemme see here, about 40,000 years ago the sea level rose a whopping 300 feet, and has pretty much stayed there since. That was global warming. Ancient civilizations responsible for that disaster must be held responsible (tongue in cheeck). They had too many cows and pigs passing wind. All the evidence for this is right where they left it. As usual humans are lazy and don't want to go far for their food or water, they lived near rivers and coast lines, all of which are now 300 feet below the oceans surface, all their remains are still there, we just gotta go and find them, I'd really laugh if they found big rusty submerged factories and cities, I know the villages and towns must exist, but wouldn't the self destroyed high tech civilization be a blast.

I'm not convinced global warming isn't natural. Obviously temperature is going to vary over the millions of years in the Earth's history. I don't see too much of a problem in the long term because I don't think its a real problem.

I agree. I believe global warming may be a natural climatic cycle for our planet. A cycle that is so long that we have no previous record of it. I'm not sure what Al Gore is using as evidense to support his argument about global warming but I'm finding more evidence in my college classes that it is a normal cycle. I have found there are more immediate concerns. What we need to concentrate on is balancing the natural environmental cycles that our industrialized society has disturbed. There are 4 major environmental cycles that we directly effect: Nitrogen cycle, Carbon Cycle, Water cycle, Sulfur Cycle. We affect these cycles with fertlizer use, pesticides, burning of fossil fuels and irrigation. The list of factors and interactions is incredibly long but they cause greater and more immediate environmental damage than gloabl warming if we continue to destablize these natural cycles.