Somebody's a little defensive this morning. Why can't Jack and bftank accept that the OP is interested in why people do things? Wondering why people make different choices is not the same as condemning those choices.
To the original question, marketing is a big part of it. In non-urban areas there is little downside to a big vehicle 9other than cost), so people are less resistant to the "appeal" of a bigger car or truck. Then consider what's available. Compare the original Honda Odyssey to the current model. "Bigger" gives manufacturers and salesmen a selling point (useful or otherwise). Look at motorcycles - they've gone through the same "bigger, stronger, more expensive" evolution.
OTOH, sometimes you do need a big vehicle only once in a while, but do not want to own a fleet of task specific vehicles. I don't drive the LX470 every day, but when I need it, I need it.
when i don't agree with something, and i want to understand the other parties reasoning, i try not to make gross generalizations, stereotype, or indicate lack of intelligence on behalf of the person i don't agree with. because the OP did these things it seemed like he was condemning these choices. it didn't seem like the OP was actually interested in why big fat america does what it does. i interpreted his wording to indicate that he wanted to get something of his chest. if that was not the case i apologise for somehow misinterpreting what was said, and for being a hypocrite about making gross generalizations, and for apparently being unreasonably defensive.
if op really wants to know, this is why i drive a big crew cab f350 diesel 4door longbox, because it is a very useful truck, hauls a lot of stuff in an 8 ft bed when i work on my house, or yard, will pull my 20' trailer when i am using it for it's various purposes throughout the year, seats 6 people when going to cut wood or camping. it is only my wife and child right now in our family so yes the seating in it or the burb or the explorer is excessive, but i don't plan on selling them anytime soon and our family might grow in the future so i like to plan ahead. my f350 gets the same mpg as my explorer does, however it has mare capability than the explorer does when it comes to work.
i didn't buy a midsize crew cab because it won't do the work i require of it as well, in regards to hauling wood, a 3k lbs empty trailer, going over passes loaded, etc.
i did buy the explorer because of it size and abilities to go places the cc wouldn't fit.
i traded a steering column for a motorcycle in hopes of getting that in running reliable shape to commute to work. haven't done that yet because of my other project priorities.
i am 31 have no debt, except for my two houses, and i am trying to get rid of one of those this year. (anyone want to buy a house in norfolk, va? haha)
i agree there are alot of people that could do a better job of managing their lives, but i don't think that is just an American problem. we are not the only country with management issues as the news states everyday.
as far as new vehicles go, i don't have issue with their sizes. well i take that back, i wish dodge made an actual crew cab longbed truck. i wish the power wagon was offered with a diesel. i wish the diesel trucks had stuck with mechanical injection. i wish you could still get a stick shift in all of the big three. i wish toyota had actually made a one ton diesel to compete with the big three. i wish all one tons had solid axles with manual hubs and tcase shifters, and were missing the unit bearing hubs. i wish the build quality was better. i wish they cost less. i wish they one stick with one diesel motor make as beefy, efficient, simple, affordable, and make 300hp. i wish prius owners would realise they are not saving the planet or money. i wish the epa would pull it's head out of it's bum. i wish the epa would let car manufacturers build more midsize trucks and cars that are diesel. those are some of my issues with vehicles sold in America.
sleeping dog-since he was at home depot it would be a good guess that he puts stuff from home depot in the back of it.