You talk about the russian roulette with climate, but the issue is far more complicated. There are bunch of other russian roulettes to consider with policy and society. What if society needs carbon to run the economy and keep the jobs and peace? What if oil-dependent countries collapse and turn to war, terrorism or mass-migration? Those are substantial risks that can kill many people and affect the quality of life for the worse globally too. You see what happened in France when they raised the fuel tax. It's not hard to imagine some worse scenarios.
The big picture seems pretty certain tho