Earlier quoted context omitted.
> But MAD is still what keeps the world relatively peaceful. There seems a kind of anthropic principle here - it seems successful, but we wouldn't be here talking about it if it had gone terribly wrong, which has come very close to happening more than a few times, apparently. The risk of that is >0, but the cost is...infinite. That doesn't seem obviously worth the gamble, to say the least.
I think it's less of an anthropic principle, and more the realization that it's the only stable equilibrium available once nuclear weapons become available.
I just don't buy the apparent absolute certainty it won't kill everyone. Then anything else would have been preferable to the "stable equilibrium" we were assured was necessary. But we won't be around to talk about it. That eternally living under MAD is 'the only way' seems to me more like a religious belief than a realization of a fact. A uniquely insane/evil one, however you want to describe killing everyone on Earth. Perhaps it's not considered so evil or insane to do that if you meant well?