Some conservatives think climate change is no big deal since there were times, in geologic past, when Earth's climate was much different. Here is an analogy, I just thought of, relating the life of civilization to the life of a person. People know that they will die someday. If something doesn't kill you sooner, old age will.
There are folks that take chances earlier in life; like snowboarding in an avalanche zone. They often die early, which can be seen as more of a tragedy than dying from "natural causes" in old age.
Same can be said for our civilization. We could push climate change to happen over the next few decades; like entering an avalanche zone at age 20, or we could wait till "natural causes" happen, like death at an older age.
If we wait, by not causing climate change ourselves, we could get several thousand more years for civilization to flourish. Who knows.