It's true that most people who drive SUV's don't use them for hauling stuff *all* of the time. But, what do you do if you need to haul kids/dogs/stuff around *part* of the time?
Should each person be required to buy an SUV for the times they have to haul stuff, a mid-sized car for when they drive themselves and one or two other people, and a mini-car for when they are alone?
Talk about a crime against the planet.
Somewhere around the early 90's the Japanese, particularly Honda, started making cars to live longer than the people owning them. Many of those get sold used with 150K miles on them and still run like new, and can be bought for as little as $2000 here and there. That's one possibility for a second car, there are others. If you use the stupid SUV properly, i.e. only when there's some real need for it, the thing will last you 20 years. Surely that can't be a BAD thing...
Dependance on foreign oil compromises America's foreign policy and allows things like 9/11 to happen. 100 years ago, the kinds of people who did that were riding around the desert on camels and living in tents, and did not have the financial wherewithal to attempt such feats. If we were to do EVERYTHING within our power to eliminate the use of foreign oil, including developing every possible domestic energy resource AND get rid of bad habits like driving around in SUVs unnecessarily, it could be done.