You could say the same things about a Suburban or a Tahoe, but they serve a purpose. We rent something like that every year when we go on a family ski trip. Five adults plus all of our gear fit comfortably in them. It's hard to do that in a wagon.
And I suspect this isn't your demographic, but there are huge swaths of the American population who go on family trips every year towing travel trailers. Or boats. Or jet skis, or whatever. I agree that big SUVs suck to drive every day, but if you can't afford two vehicles (or don't have the space, or don't want two vehicles) then it makes sense to own one. As a kid I went on tons of camping trips with my friends' families, and we all piled into massively-overloaded minivans or full-size vans to make those trips. I'd much rather drive a Q7 than a Chevy Express.
I remember all the uproar when Ford introduced the Excursion. Why would anyone need such a massive mall-crawler? Well I'll be damned if those pieces of Ford garbage aren't still super popular with racers and off-roaders and outdoorsman because they swallow a lot of gear, they have 4WD, and you could buy them with a diesel.
