Our current economic systems (global) are doomed. The reason won't be climate change, however. It will be technology. Soon, as in less than 100 years, there will be no jobs for humans. I just heard an advertisement the other day that Schwab (sp?) now offers "humanless" financial advisors.
With no jobs, there will be no way to acquire wealth. Through death, properties will be redistributed, and over the course of a few more years (fewer than you think), there will only be one economic status....equal. Obviously, this will produce a change in human society like no other.
As for global warming, I think in the long run, it benefits humans and most animals. Land that is currently uninhabitable due to cold will become habitable and farmable. Most land on the planet is currently located in "cold" zones. Sure, you will lose some real estate, but you'll gain in back in other areas. Some species will go extinct, but that's the way of the world. Remember, 99.9%.....
Do what we can to live in harmony with the environment, sleep well at night. Worrying about it.......not gonna happen for me.