The same thing can be said about a boat (one large enough to sleep aboard, & live for several weeks). Been there, done that! Dockage or mooring fees. Haul out before the ice comes. Covering the boat. Mold and fungus, & dry rot. If moored, pumping it out after every rain. Vandals (coming to your boat, only to find it awash in beer cans and used condoms can be yucky). Hardware at a 500% markup. Zinc plates and propellar shaft fittings. Bending on the sails. Renewing lines and halyards. Electronics that don't in salt air. Insurance, taxes, liens, m ortgage payments. Guests pestering you for free rides, and then coming aboard and throwing up everywhere. Little quarter-inch holes all over your decks and cabin soles from the girlfriends in their spike-heeled pumps. Rotting remains of crabs that weren't used for bait and escaped. Water in the fuel. Gunk in the gas. Nameless sculch in the bilge. Plugged marine heads (tampoons are really fun, when you have to disassemble the thing in a seaway).