So the person who hit you and totaled your car can hire a lawyer and sue the shit out of you, which your insurance will settle out of court for an undisclosed sum, and they get to walk away with the money, you get Jack shit, and to top it all off, you don't even have a fucking car anymore.
Don't get me wrong, I'm in favor of insurance when it comes to 1000+ lbs death machines that go barreling down the road at speeds faster than the fastest land animals as part of normal usage, while packing more kinetic energy than a high caliber bullet.
.... It's just... Those laws aren't there for you, they're there to protect the rich. After all, you might hit their Porsche with your Honda, and they don't want to pay for that.