The power of nostalgia aside, if we're on the downhill slide we're still the place most of the world wants to get to. If you think it sucks here grab your passport and live abroad for a few years. You'll either gain perspective or you'll find somewhere better. Either way, you win.
This.
America is in decline because we as people are declining, and our government reflects that.
But we are still head and shoulders above much of the world, and we'd have to fall still a good bit further to merely be *as bad* as most any other place you can go.