While you like to point out the "stupidity" of humans for global warming, there is still no definitive proof it's people causing it. The biggest problem being climate data has only been collected for a very short period of time, and how the clime really works has only been studied through geological and ice cap data. While that gives clues to how the climate was, and gives ideas for how the climate changes, the fact is, they still have no clue what the true factors are causing the changes to the climate. They try to use carbon dioxide in the atmosphere as the major "green house gas". The fact is the largest greenhouse gas is WATER. Geologically speaking, the Earth is well overdue for it's next climate shift. Do the research, it's normal for the planet (not always healthy for the animals living on it) to shift it's climate. As an example, Antarctica used to be a temperate rain forest.
Volcanic activity in recent years have thrown more carbon dioxide into the air than people can produce. Until some scientist can point out the true magnitude of factors causing climate change, then I won't believe it's people doing most the damage.
And at the time Antarctica was much closer to the equator. Its moved down there over time, and the temperate forests died off. I am a true believer that humans have worsened or set off or sped up the natural process of global warming. Granted, it was already under way when humans arrived at the industrial revolution but i can garentee that we have helped it along quite a bit, and if we don't change our ways soon enuff we will have royally screwed ourselves and in 10 thousand years when an alien civilization finds the ruins of our world after we've ripped it apart in search of oil and water and wiped it clean in our wars with weapons better left uncreated they will look at this and think "well, at least we won't have to meet that species".
While I agree that Global Warming is a normal procces that humans did not create, I do think that right now earth has a disease, like a fish, called 'humantitis'. Its a very rare disease that causes the planets natrual balance to go out of wack, and without this natural balance the things that are a normal part of earth can become more perminent.
To explain the metaphor, i believe that because of humans destroying all of earths natural buffers this global warming will be far more devastating then any before, maybe even enuff to wipe out humans on a whole, maybe only enuff to destroy our civilization utterly. Once we fall, there is no coming back ,we've used up all the resources we have and they will not come back.
And by buffers i mean:
-The aquifers all over the planet that can keep river flowing even after the rain stops and drought sets in. Which are being drained far faster then they can fill by greedy human cities and farms.
-The rainforests that take CO2 out of the atmosphere and put oxygen back it Which we have cut down in larger numbers then ever before.
-The vast diversity of life that can survive almost anything due it the differences, which we are destroying by introducing exotic species into environments not suited or ready for them.
-The damage we are doing to the fresh water systems of our planet.
-The damage we are doing to the oceans of our planet, which help bring warmth to the colder north and coldness to the warm south, balancing the global temp.
-The damage we are doing to the landscape, flattening it out and putting big, heat and pollutant generating cities there instead.
-Fertilizers that cause deadly plankton blooms in rivers, lakes, and oceans.
-Oil spills that wipe out entire swaths of ocean.
-Deforestation that destroys species we've never even heard of or seen or documented, let alone figured out what purpose they serve in the grand design of earth.
And on top of all that, once the water runs out, and the oils starts running really low, wars will start. I bet my bottom dollar that nuclear weapons will be used, as well as many others like biological weapons and other, deadlier weapons. I bet my bottom dollar that after humans go to war over water there will be only traces of our civilization left over, even fewer then the Greeks and Romans and Aztecs and Egyptians, because the weapons we will use will wipe those things from the surface of the earth, and what little survives will degrade far quicker then anything made of granite and marble.
I know what your thinking "thats a doomsday scenario, worst case possibility". Well, IMO, its the most likely thing to happen, seeing as humans have gone to war over much lesser things in the past, and used these weapons. I, personally, hope to any and all possible gods out there that this does not happen, but I honestly think such a thing will happen, if humans are unprepared to suffer the consequences of what we have done. We are bad parasites, harming the host we depend on for survival. Now that host is sick, and we are getting the worst of it, or starting to anyway. And if that host should die... well, you can figure that out on your own.