"Do everything" is wrong. This is why: You want the most power per dollar of capex, and you want to have it come on line as fast as possible. Electricity is fungible. You can't tell a coal watt from a solar watt from a nuke watt. If you want to avoid coal, oil, and gas for externalities, you want the thing that costs the least and arrives soonest. That's renewables.

Every dollar spend on nuclear would deliver more power sooner if spent on renewables.