We've already had a nuclear war.
It was a trifle one sided, but it was a war, and nukes were involved.
The next one, and people being people there WILL be a next one, won't be quite as benign. The trick is to move to one of two places: The back of beyond, or Ground Zero. In the first, hopefully you've found a place where the Jet Stream & miscellaneous eddy currents will conspire to keep the fallout away from your "victory" garden[0]. In the second, you are the fallout, and won't give a shit.
Me, I'm more worried about earthquakes. Rogers Creek is just a couple hundred yards from where I type(o) ... But it's hardly something I lose sleep over.
[0] And that you have enough ammo and know how to be able to harvest the chow ...