Cheap,abundant & very safe nuclear

Why are the governments of the world who use nuclear energy not using Thorium reactors? It’s safe abundant & very fact of the matter is Thorium isn’t any good for there nuclear they will risk the human civilization from now to however many generations survive there ’s all about greed & reactors would give us no harmful waste as well as all the other benefits from using this abundant will we say enough is enough.I’ll tell you when after a nuclear d