There seems to be a prevailing attitude of "We are now in a phase of development as an economy. First world countries had an opportunity to grow without regulating pollution. Regulating us will inhibit our ability to catch up".
For some reason the literal end of the world isn't a strong enough argument for them. When I mention it, I am frequently told that it doesn't matter because no matter what is done, the outcome in terms of climate change is going to be the same at this stage.