> Second, there are possible paths to have a winnable nuclear war, actually, the US did have one a couple of decades ago and it won.

Well yeah because at that time they were the only one who had a nuclear bomb. That situation didn't last long.

I think it's really great that it's such a taboo, otherwise these things would be used a lot, incurring all sorts of pollution, mass casualties and chances to escalate. It's a good thing that these have not been used since WWII though I do think their existence as a deterrent has brought us a bit more peace.