It will do NO GOOD to run away when the SHTF. Dig in and fight with your neighbors to hold onto your homestead. Getting it in your own home is better than out somewhere on a highway.
I believe you can take a lot more of them with you fighting from your own place.
Plus, I would have a harder time thinking about who is taking the majority of my fire power and ammo left behind. It would be a very unusual circumstance for which I would elect to run for it.