> Unfortunately I brought a child into this world in 1990 before I learned of how serious the impending climate catastrophe was, and now I must accept that she could have children, and her children's children will have to bear this terrible burden as survival becomes nearly intolerable for most life on the planet.

You're carrying around way more guilt and anxiety about the situation than is supported by the science.

Take a look at the data in those links above. The world has changed. The consensus of science-based estimates is that the world will see about 2C of warming, leaving it far from the "intolerable for most life" scenario you fear.

Climate change is real, and will cause quite a lot of suffering for quite a lot of people, but the science-based projections for our future are very different than they were 20, 10, or even just 5 years ago, and for the better. If you tuned out in the past due to a lack of progress, now's a good time to tune back in and update your views in light of new and very different data.