I would like to see things as positively as you, but until the 20th century humankind had never before faced the dangers of nuclear destruction. We just don't k

I would like to see things as positively as you, but until the 20th century humankind had never before faced the dangers of nuclear destruction. We just don't know the extent of the damage power hungry rulers are willing to unleash on the world when they are cornered and feel they have nothing to lose, while controlling more destructive power than ever before in history. Your figure of 1/3 deaths, or up to 3 generations to rebound might be too optimistic. We just don't know. Given how reliant we are on existing supply chains, their complete breakdown could send us back into the stone age. We've certainly seen how even a relatively mild pandemic can disrupt our lives for years. The effects of something far worse would be difficult to predict. Us measly tax payers can only hope for the best.