A Sea of RV's (March 11: Day 8--Wickenburg, AZ)

As you recall, I had mentioned the sea of cows in California, today was a sea of RV's.....parked out in the barren desert with nothing around?  Who are these people and what do they do all day.  I mean, there is literally nothing out there but scrub, cactus and dust.  No lake, no pools that were evident.  Just one RV park after another.

I don't get it.     Things that make you go "hhhmmm"