Part of humanity will be sure. But what about the rest?
Climate change will not kill humanity off, but its likely to cause suffering we haven’t seen since WWII (or worse).
Unfortunately I've seen a glimpse of how the bottom 50% of people (not in a developed country but globally) get by today. If one doesnt care for their suffering and their lives, its easy to confirm that the society on average (not on median) will be more prosperous. But that will more likely manifest through a few hundred trillionaires living in space and a few ten thousand billionaires who serve them with their services.
The bottom billions will likely just starve, move around desperately due to war, famine, fire and flood, turned away at closed borders, and who knows what new type of cruelty that will bubble up in the future. What do we tell them?