"If you don't change your lifestyle completely, and manage to convince everyone you know and 1/2 of voters in your area to do the same, you and your children will die in agony."

This is what climate change means. When put so bluntly, it's not hard to see why people get defensive about it.

And it's just for the people in developed countries! For developing countries it's even worse: "In the best case, you, everyone you care and love, and your whole race will never ever enjoy the lifestyle and wealth of those in developed countries."