For the past few years I've held the view that choosing to live in a large metropolitan area (NYC, DC, SF, Boston) is basically choosing a fast, fairly low-pain

For the past few years I've held the view that choosing to live in a large metropolitan area (NYC, DC, SF, Boston) is basically choosing a fast, fairly low-pain death in the event of full-out nuclear war. Did I get that wrong? Is a barrage of modern weapons actually survivable within city limits?!