If no one on earth built a fire, drove a car or burned coal, temperatures would still go up for 300 to 500 years right now

This is what most people don't get.

IF we burn fires or accidental forest fires started by lightning, or drive cars with fossil fuels, or burn coal, this is only going to get worse.

So, could it be said that our civilization is presently extincting itself within 1000 years?

The answer to this is of course: "YES"

So, the people that actually understand all this have to hope that enough people die worldwide from temperature increases that the rest of us alive then do something that actually allows people and animals and birds and fish etc. to actually continue to be alive on earth.

That is the hope.