I'm going to trade my SUV in for a sports car.. I hear they're not cool anymore, and get much better MPG..

As for light truck.. If everyone drove pickups instead of SUV's, would you still have the same argument? Same mass, same handling, same emissions, same chance to not get hurt when you run into a compact car. It seems like your entire dissagreement with an SUV is that it's a useful form of pickup, which amazingly has become poplular. Heck, as most people who drive an SUV only drive themselves, it's almost as if they bought a truck anyway, so what's the difference?