I'm also in favor of nuclear power, but you have to admit that there are valid concerns. Nuclear waste is unsolved as long as we don't build breeder reactors. Uranium supplies aren't limitless either. Without breeders we'd run out quickly. Thorium is unproven tech. Safety is a concern, both engineering (do you really trust for-profit companies not to skimp on safety?) and proliferation of nuclear materials (how many people does it take to break into a nuclear power plant and steal enough material for a dirty bomb? Which nation states do you trust enough to use nuclear power without building bombs?). Nuclear power is also quite expensive because of all the regulations you need to make it safe.

Yep, unfortunately nuclear power is about 2x more expensive than e.g. gas, and more expensive than even renewables. The solution here would be to make CO2 expensive enough.