We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Only a moron (or grant whore) would try to model something like that.
Oh, Bill! Where's your sense of adventure? You are certainly right about the huge number of variable interacting in a huge number of ways. But that sort of thing usually gives you a (gaussian) normal distribution - aka the bell curve.
If we look at climate, we see a lot of cyclical stuff, what exactly depends on the scale. On a daily basis, it gets warmer in the day and cooler at night. Usually. (I suspect the sun has something to do with it!)
If we look at geological time scales, we see glaciers for 100,00 years or so followed by a warm spell for 10 or 15 thousand. Happens like clockwork. Fascinating, eh?
We also know with great certainty that at various times there has been both more and less of pretty much anything you'd care to measure - temperature, C02, oxygen, etc. The interesting part about this is the climate never got 'stuck' in one state - no Snowball Earth, no runaway greenhouse Venus.
All this suggests that there are some important drivers that control our climate and they interact with some negative feedback loops that keep things kinda sorta the way they are. Figuring this out is a fascinating scientific problem.
Unfortunately, judging by their models, the Global Warming crowd does not have a clue (did someone say 'grant whores'?) and has gone all-in on a political explanation. Paging T.D. Lysenko to the white courtesy phone...