When out traveling with my little trailer, I hope to be able to park it here and there and use my vehicle to explore arounds abouts, just want a place to crash in between jaunts maintly. I never saw much point in dragging around a big box of vacant air, though when there's more than one person I've heard that people want to retreat to their respective spaces within a trailer.
But as to vacuous wasteful spaces...where I live in Woodinville, there are quite a few McMansions. They used to be built upon at least a horse acre, or much more, but the new ones seem to be springing up right next to eachother such that you could touch your neighbor's siding from the bathroom window. Great big 3,500 - 4,500 sf beasts, $450+/month utility bills, I used to live in one on acreage so I know, but it was a covenant restricted neighborhood where when I parked my Class C way off to the side of my property in the back, the neighborhood association still threatened action (meaning I couldn't use all of that land I supposedly owned). I scaled down to only 2400 sf house, no covenants, simplified, realistically while still raising kids, it's so much better.
Probably after seeing poor living conditions in Guatemala she had to have taken a second look at what we take for granted here. We don't need a huge amount of space to really live pretty well, there's gyms, clubs, libraries, parks, stores, malls, coffee shops, universities, loads of places to hang out---and think of her freedom with no mortgage! Freedom, is so important. In fact I sometimes think a mortgage is a modern form of voluntary slavery for many people. They sign 30 years of their lives away on the dotted line, all for "the box" (as I call it).