- perhaps they need such a grossly over-sized vehicle (such as my old landlord, who was a tree specialist and needed a large truck for his business, or the over-sized families in Utah, which can only be accommodated in over-sized "Mormon Assault Vehicles"), and
- I've seen many SUV owners - and people in general - get irrationally defensive when someone berates them personally for a choice they've made. Ad hominem and knee-jerk reactions don't solve anything.
Addendum 1/5/04: Fueleconomy.gov has a fuel economy calculator that's right on with mileage for my 1987 Nissan Sentra. Very awesome!