Experts say we are responsible for the world getting warmer

Experts say we are responsible for the world getting warmer. 20,000 years ago, Most of the North American Continent (and probably the northern hemisphere) was covered in Ice. This was known as an Ice age. The world has been getting hotter ever since. We have only been burning fossil fuels in large quantities for the last 100 years at most. Why is mankind so arrogant to think we are responsible for everything? When the next Ice Age comes they'll be begging us to burn fossil fuels. I have noticed is the extremely emotional, almost hysterical pronouncements that arm chair experts are making to this debate. I don't know if man made global warming is occurring but I don't really believe much the scientific community is feeding us as it is all about procuring funding. The bigger the scare the bigger the payout.