it’s the most expensive form of energy due to massive regulations

So deregulate to the same standards Fossil Fuels are regulated at

the power plants take way too long to build

because of all of the red tape from your last point, as well as fossil fuel organized NIMBYS

nuclear waste is a problem, no one wants to have it buried near their homes

Again because disinformation spread by fossil fuel organized NIMBYS

the fissile material is already rare and difficult to come by, mostly sourced from politically difficult regions, such as fucking Russia

Breeder reactor