The problems generated by nuclear waste are can be controlled far more easily than those from CO2.

Cross your fingers when you say that. "Solved" means sorted out safely for the next few thousand years. We haven't done that yet, and there are good reasons for thinking we never will be able to. As and when we have done that would be the time to talk about whether to take up nuclear fission as a way of prodiucing energy, not till then.

We've already got a first rate fusion plant in a safe place, and it is set to last us for billions of years, with no maintenance. It's called the Sun, and it gives out all the power we could possibly need.

It's just ("just") a question of organsing our arrangements for making that power available to do the things that we need it to do. And cutting out doing stuff that makes things worse in the present (fossil fuel), or stores up big trouble for our children and their children...(nuclear fission).

Those aren't easy things, but they aren't impossible. The pity is that the peoples with the power to make the changes that need to be made are the last peoples who are going to be hit by the damage caused by the failure to make the changes.