Earlier quoted context omitted.
Have we been reckless? We've never had a serious accident. So maybe it's not luck, maybe there are a lot of controls that actually work well.
In recent times, perhaps. But if you read the literature on the accidents and incidents that have occurred -- it is definitely due to luck.
https://en.wikipedia.org/wiki/1961_Goldsboro_B-52_crash
3 of the 4 arming mechanisms activated. I would say it's a combination of good luck and good controls :)