If your car gets a flat every other day, the driver's seat is stuck in the reclined position, it's constantly trying to steer you off the road, and the heater doesn't work, then maybe it's time to give up on fixing it and buy a new car.
It's pushing the analogy, but there are a finite amount of car materials in the world, and at some point you will have to start to recycle even the rusted out junkers if you want to drive. People fixing their country is something that's going to have to start happening eventually.
Cars are already made of recycled materials, especially steel and aluminum. But metals in old cars are melted down in foundries and reconstituted to the proper alloys before being used in new cars; they're just used-as is.
To go back to this analogy, that's basically like completely eliminating the government and creating an all-new one from a blank slate. I don't think you were thinking of doing anything that extreme.
And historically speaking, the only time this happens is usually after a major war when a country loses and becomes occupied by another power (Germany & Japan, WWII), or after a bloody revolution (Bolshevik Revolution in Russia, French Revolution in France). #1 is pretty much impossible here, and #2 is not something I want to be around to witness. The most likely outcome is something much more like #3: the fall of Rome, but on a much shorter timescale. That isn't something I want to witness either.