Leonidas, the opposite is more like it, but that depends a lot on lifestyle and situation. I live in the middle of a city where I make a living. I have emergency food storage and disaster supplies to go a little while but I continue o build up a survival retreat for the long term as a long term backup plan.
None of us really run things in a single large town or city in this country. As for this website, I don't think we even have anyone who runs a small town or middling sized business. Any of us trying to hole up in e conventional suburban home is going to run into problems almost immediately. Those who try to live full time at sustainable survival retreats tend to go broke doing it. At best, in non-SHTF times, only one in five of your group lives at the retreat full time, fully sustainably but continuing to build and maintain infrastructure that can handle more people. A clue and an honest assessment test you can do yourself, if he location is not capable of sustaining the full time people off grid in a comfortable lifestyle, it will not sustain you either when you bug out to it. Retirees living on grid in the country actually living on $3500 per month in annuities don't necessarily count unless everyone is certain that it would continue working if and when the money turns off.
I agree that meaningful fighting will be in urban areas, but for the sake of your family, evacuate them to the remote safe area before you join the fray. You don't go home every night after a combat patrol to fuck your wife, change diapers on the newborn, admonish your teenager to do homework and fix the bullet holes in your gun truck.
The combat zone should be no less than a half day of travel by common mode from your safe area, not twenty feet from your bedroom. Preferably two or three days travel to a FOB or safe house depending on the nature of expected operations. If you are seriously having to consider home neighborhood level combat operations, then It is time to consider a staged evacuation on noncombatants and preservation of wealth at a backup location unless you are absolutely certain of the loyalty and capability and numbers of the people you have on hand and convert that neighborhood into a stronghold.