There has to be a legit argument against nuclear. Solar I can understand because it just simply isn't cost efficient. Is it the same with nuclear or is it also because of the scare of a meltdown? How much safer are reactors now compared to the Fukashima and Chernobyl ones?
Chernobyl was the result of Soviet engineers disregarding every single safety precaution in the book.
Fukashima was the result of terrible design planning - there's not much you can do to stop a tsunami from destroying your reactor... besides moving it inland.
Both reactors didn't have nuclear explosions - the runaway heating caused the coolant loops to burst, and those loops are under some incredible pressure. Lots of the coolant water gets immediately thermolysed, and the resulting oxygen and hydrogen immediately burn. The result is a giant fuel-air bomb that sprays bits of reactor fuel everywhere.
Modern reactor designs use molten salt at higher temperatures and lower pressures. Such meltdown events can't occur with molten salt reactors, not to mention the nuclear material itself isn't configured the same way. Unfortunately, I can't recall the details in it, but I recall it being unable to start a runaway heating event.