James Lovelock said that while the earth’s future was utterly uncertain, mankind was not aware it had “pulled the trigger” on global warming as it built its civilizations.
The human species is but a bit-player in the long story of the planet Earth. What we do affects little of the overall narrative. But nonetheless we have unwittingly pulled the trigger and shot ourselves in the foot. So enjoy the rest of your life because that is all you can really do. Enjoy it even if you have to limp for the rest of the time.