Americans like cars so much because they're incredibly useful. And public transit sucks, which is sort of a chicken-and-egg problem. We don't want to invest in something which is unpleasant to use, so it remains unpleasant to use. In my city, we have the additional problem that the local transit agency only wants to spend money on light rail, which is just a smaller version of the "nobody builds subways to subdivisions" problem. I'd be more likely to use mass transit if the bus was clean, comfortable, and came a lot more often than once an hour.
Yeah, I always describe it as the US setup being in a relatively stable configuration currently and the mass transit solution being another very stable setup but the transition between the two being both painful, expensive, and time consuming.
