I compare it to the cost of owning a vacation home in similar locations we camp, i.e. beach front, lake front, river front. Considering initial purchase, maintenance, taxes, lawn care etc. of a second home my hobby is cheap and fluid. I have a beach front home one week and a river front home the next. Plus I'm not stuck with the same neighbors.
We also use our camper when visiting my in-laws in a small town where the only hotel within 30 miles is an overpriced ($140/ni) run down flea bag. The small City Park RV Park in this town is right on the golf coarse, good location, clean, quiet and well maintained for $10/ni. I pay ~$90 for fuel round trip.