I'm staying, and if it comes to it, dying here. I've lived elsewhere. I earned my citizenship here. Liberty takes on a tangible quality when you've known other parts of the world, and it's worth fighting for.
There is no other place that enjoys the freedoms we have. Even if there were, as soon as the American system collapsed, they would follow in a few years. Don't forget that ALL of the important human-rights issues (slavery, women's suffrage, freedom of religion, civil rights) were settled and decided here. Not in England or France. If Democracy fails here, it's going follow suit elsewhere.
Not only is it not worth running, there IS no place to run.
As far as the ultimate SHTF, I doubt I'd be shooting at the cops and soldiers I know. As a previous poster mentioned, most of them would've abandoned their posts by then. How many of them, even the weary ones, would really carry out no-knock warrants, property seizures and forced internments?
No, the guys we'd be up against would be whatever dregs the government could slap a uniform on and hand a gun to. I hope they've got a few layers of armor, because they'll need it. I imagine I'll be shoulder-to-shoulder with the real guys who'd already jumped ship.
Katrina showed some of this. Who'd they get to enforce "order" when the system broke? Mercenaries (Blackwater security) and the California Highway Patrol. Good luck getting even them when it all falls apart.
I wonder if there's some point where the lid starts to boil off just enough that the government will realize that the cost/benefit ratio will be just too bloody.
Are we there yet? I don't think so. In ten years, it could easily go there, though. It may be time to start thinking about it now.