Modern reactors fail save. Fukushima was an earthquake disaster first and foremost, and an older reactor design, so while the radioactive runoff was bad, the threat has been overblown and a modern reactor is hardly the existential threat people think.
If externalities concern you, paying taxes to governments that wage wars and enforce bad laws is a far greater moral hazard.
You brought up an good example about the government I watched that part too on economics too much money on war.