Yes, living in an RV/5th wheel is cheaper than a house, IF you plan on staying in one place. The cost of fuel, maintenance, camping, etc ON THE ROAD will probably be a wash.
Also, you have to factor in the cost of your rig. If you plan on traveling, a reliable, used set up is still pretty dang expensive.
The vast majority of people RV because they love the lifestyle, and is something they planned for many years. Definitely wouldn't recommend it as a bug out type last resort.
If you and your wife have a certain lifestyle you have adapted to, you might not be very happy. There are only 200-400 sq feet of living space. Not a very large buffer zone!
It is a totally new way of life. And no, not everyone here has a pension, or SS. We have planned, scraped, and saved for the last 15 years to make our full timing dreams a reality next year.
Good luck with your decision.
