The US seems to believe that more watts consumed = better quality of life, so is generally opposed to making things more efficient.
It's a general trend in consumer products. There was a discussion on vacuum cleaners a while back on Slashdot and several US commentators said that the best model was the biggest, most powerful suction one. Well, in the rest of the world we value other features just as much or more. I have a small Dyson because it's less work to push around but still more than powerful enough to clean my house. It has a rotating brush that improves pick-up, and good filtering to prevent dust being thrown up into the air. Japanese consumers care a lot about energy consumption, to the point where Sharp and Panasonic make vacuums that reduce power as the movement of the head slows, i.e. at the apex of your back/forth motion.
Actually I really want to buy a Japanese ceiling light. A 50W LED dome produces 5500lm of light, compared to about 1200lm from a 100W incandescent. It's diffuse so lights the room much better, and can switch between daylight and warm hues. They don't even make a 230V version.
America. Big cars, big meals, big lights, moar watts. It's a cultural problem.