I often hear the argument that "nuclear is bad because there is a chance of a catastrophic loss of life". Well, there has not yet been any large scale nuclear disaster. Cars kill hundreds and we still use them.
Cars in the US alone kill 30,000 people every year. It's one of the biggest killers we have, only behind things like heart disease, and it's easily the biggest thing that kills younger, healthy people. Worldwide, the number is somewhere around 250k.