Those graphs just showed how much global temperatures have fluctuated for the millions of years that humans were doing nothing, so that doesn't support your argument.
Basically, I think all of us should agree that global warming is a theory. To say it is fact is arrogant since not everyone agrees. If it was fact, it would be plain and easy enough that we wouldn't be split 50-50 here. That being said, we don't really know what is going on, if anything. We have been polluting for only 150 years, and the earth has withstood millions of years of change without us. If there is a problem, our efforts to "Go Green" have no downsides (except they are a little pricey, but I guess it's worth it) so let's just move forward with that. No one on here is going to sway people from the other side, so let's just all agree to keep Earth pretty so that we can enjoy our nature hikes and the Discovery Channel.