We bought our first RV because my wife said, when we took the kids "camping," she wanted "instant luxury." I've been tent camping, and while it can be fun, putting up a tent in the rain isn't my idea of a vacation.
I've never been to OZ but from what I've seen on TV, there are just too many bugs and snakes and other lethal creatures out there for me, and I've spent a whole lot of years in the tropics.