They say the same thing about RV's. My brother in-law grew up around boats. Home when he was young was Smith Island, Maryland. One of the Chesapeake Bay islands off the Maryland coast that are sinking.
When he retired they bought a boat and spent a bit of time touring along the Coastal Waterway. Sold the boat and bought an RV. Later sold the RV and bought another boat. The biggest hassle for both are finding places to dock them during season without spending a small fortune.
Unfortunately his health forced them to sell the second, bigger boat before he really had a chance to enjoy it.
We considered the RV route briefly (Sell the house, by an RV) until I calculated how many nights in a decent hotel room we could spend for the cost and upkeep of a decent RV