There are boats and there are floating RV's, and there are some vessels that try to be both. Most folks who can afford a 40-plus foot boat seem to like their creature comforts. Perhaps a boat kitted out to RV specs won't sail as well as something saltier, but it will sail. At my marina, a stunning percentage of truly lovely, truly salty, boats almost never leave their slips. And the folks who have the Hunter in the slip next to mine actually sail it virtually very weekend.