To Alf's point, we are still moving out of an ice age, the fourth in a series over the past 750,000 years or so according tot he scientists. The last glaciers retreated in North America about 12,000 +/-years ago so it ain't been that long since we would have been freezing. 200 years is a VERY short timespan, geologically speaking. Not even a blink of the eye. It is our natural hubris to think it's all about us. Guess what, it's not.
Is the earth warming? Yes. No. Maybe. Don't know. What we do know is that various organizations who have been responsible for the data fed into the climate models (and that is all they are, models; think the spaghetti models for hurricanes) have "cooked the books" so to speak so they get the results they want - and that will give them the greatest financial rewards. And if they can't tell us if, where or when a hurricane will hit a specific point in 5 days, what makes you think they can predict the temperature in 100 years, 50 years, or even next year?
Besides, I learned a long time ago that all models are wrong. Some are useful.