The fact that USA has such a massive big swinging nuclear dick, is why nukes aren't habitually raining in the world.
No, not at all. It is because two opposing sides have an arsenal of nuclear weapons is the reason why they haven't been used. The trouble with Trump is he defies all known political convention. Even the party he is a member of isn't providing any resistance from the Iran military fuck up to tariffs, something the GOP absolutely disdains. In Trump's first term, roadblocks existed to the use of nukes. Nixon was so despondent near the end of his presidency, there were backup then too. Right now, it seems only the military itself might step in the way to a nuclear order.