The nuclear approach I'm involved in is called a traveling wave reactor, which uses waste uranium for fuel. There's a lot of things that have to go right for that dream to come true many decades of building demo plants, proving the economics are right. But if it does, you could have cheaper energy with no CO2 emissions.
It's not as though we can keep burning coal in our power plants. Coal is a finite resource, too. We must find alternatives, and it's a better idea to find alternatives sooner then wait until we run out of coal, and in the meantime, put God knows how many trillions of tons of CO2 that used to be buried underground into the atmosphere.