I live in Alabama, so its really no surprise to me when I find out a friend lives in a trailer.
In my experience, there's three types of trailers...
a) The trailer that is just as good as a regular house, if not better. Big, spacious, everything completely nice. My grandfather lives in one of these, it has 4 bed-rooms, kitchen, 2 bathrooms (both w/ showers), etc.
b) The lived-in trailer... it's seen a lot of years, and the family needs to think about upgrading the the trailer (a) or moving into an actual house. I've got a buddy who used to live in one of these, until it finally became the dreaded (c) styled trailer...
c) This thing should be condemned... Not fit for illegal aliens, space aliens, or any other kind of aliens. I've seen hundreds driving through the country out here, and I gotta admit, they outnumber (a) and (b).