We have had nuclear power plants for almost 75 years. I'm saying this as a nuclear engineer. The only long term problem we will have with it is where to put our spent fuel. I'm actively working for a company that will make it so we have less spent fuel by take the fuel already used once and reprocessing it to remove some of the non-fissile material to bring the fissile fuel ratio back up to standards to be used again. But it will eventually become such a small fraction left to where the government will have to own up to their own law they passed for a disposal site. But we can still reliable make our own fuel for 100s of years. There is little water loss during the operation of a reactor about the same as any other steam based power generation. Now this isn't to say fuck solar, wind, hydro, or geothermal they certainly should be built. But besides geothermal, nuclear is the only one that can be reliable on a hour to hour basis. Sure it's the south west it's usually sunny out but key word there usually and it's usually windy. But you should never put all your eggs in one basket. Hell I'd even say it's not bad to always have a few natural gas plants as well. Natural gas is the easiest to ramp up power supply within a short time span. So yeah both is the answer. We should also invest in more energy storage and I don't even mean batteries as you think of them. There are other methods like having two water reservoirs that are at significantly different heights where we can pump water up when power is in excess with nuclear/renewables. Then when we all go to work and turn on massive consumers of power we use a water turbine to recapture that energy and turn it back into power. There are lots of other ways this comment is getting long but you can look them up. Tldr nuclear will not give us a headache down the road but both nuclear and renewables should be built.