The 9-11 attacks were horrific, but I spent my adolescence and early adulthood in the 1980's. I remember watching movies like "The Day After" and "Testament." (And "War Games." I remember the rhetoric after a Soviet fighter shot down a Korean airliner, and as our involvement in Central America ramped up. (The worry back then wasn't US troops getting bogged down in the Middle East - it was US troops getting bogged down in El Salvador or Nicaragua.) I lived in northern New Jersey at the time; my friends and I had already decided that, if shit went down, we'd head to the top of a skyscraper in lower Manhattan with a case of Black Label (I was an adolescent with adolescent tastes) to wait for the end. Better to just be vaporized than deal with the aftermath.
My father saw things differently. He served in the Navy in the early 1960's, and was in Vietnam pre-Tonkin. He was, quite literally, a Cold War veteran. But whatever he might have thought about using American military force, he knew damn good and well that anything that might lead to a nuclear exchange had to be avoided.
Sure, I worry about terrorist attacks. But I don't worry so much about apocalyptic nuclear wars - at least not like I did back in the day.
Anyone who does anything that might possibly contribute to the election of Donald Trump - whether it be by voting for Trump, voting for a third-party candidate, writing someone in, or staying home - is committing an act of civil irresponsibility. The thought of Trump with the ability to order a nuclear attack scares the living shit out of me.