My conclusions only come from the behavior I witness.
Another example: Today at the grocery store I was in line at the bakery getting a cake for a co-worker's birthday.
The lady in front of me was holding up the line for 10 minutes trying to find a no-sugar/no-carb/no-fat cake because she was on a diet. Did I mention that she was about 400lbs? I wanted to grab her by the head, look her directly in the eye and say "How about just plain ole' leaving the sweet cake at the bakery? You might get better, faster results that way. Stop shoveling groceries down your neck and the weight might come off."
or the guy who idles/cruises in the parking lot for 10 minutes while trying to find a parking spot 2-3 spots closer than he could park right now?
Never underestimate the stupidity of some folks. SUV's may not be selling as much right now but the manufacturer's are handing out gas at $2.99/gal for a year after purchase, as an incentive. It costs less, so to most people, it justifies using more.