Well if you count Supernova explosions scattering heavy elements into the universe, even then it's not renewable. You know some way of continuously making uranium 235? If you do, the nuclear physicists would really love to know it. But back in the reality that the rest of us live in, there is only a limited amount of fissile fuel on our planet.

It's even less renewable than coal and petroleum.

I mean yeah you let the earth sit for a few hundred million years you'll eventually get more carbon based fuels but if you want uranium you gotta blow up some god damned stars.

Do you have any idea how difficult that is?! It's pretty fucking difficult, genius.

Nuclear energy not being renewable is, like, one of its two failings