Should technologies, like nuclear reactors, that produce negative impact continue to be used?

Nuclear reactors has good effects and bad effects, the worst effect is the storage of nuclear waste. It is placed in breeder reactors where it absorbs neutrons to become neptunium 239 which quickly loses an electron to become plutonium 239, arguably the most toxic substance known. This plutonium can then be used in reactors or bombs. No,I do not think nuclear reactors that produce negative impact should continue to be used for the simple fact it can danger a human life.