Scott Aaronson's recent Bernay's lectures provides some useful background on the Church-Turing thesis, p=np, and, of course, quantum supremacy. https://video.ethz.ch/speakers...

Did anyone get a flash that maybe someone is shooting at us, but it's a long way away and hard to hit!

Folks also don't mention the carbon footprint of mining the fuel and disposing of the waste. But, you're right, the possible devastation from a significant accident is frightening by comparison. My physics teacher used to say that the one thing you learn about radiation is that you want to stay away from it.