lots of reasons for inflatables
Steve D., since you ask, there are a few good reasons for having inflatable mattresses and cushions instead of foam. Firstly, all of the foams absorb moisture. When you store your foam on board during the winter (or rainy season or whatever you may have) your foam sits there absorbing moisture and then releasing it back into the cabin. I suspect a lot of mold problems in boats are caused by having too many materials on board that hold moisture (carpeting, headliners, unfinished wood, linens, certain paints, etc.)Secondly, inflatables can be deflated for storage and transportation. This is a big plus for racers and people doing repairs who need to clear the decks.Thirdly, inflatables add to the overall buoyancy of the hull when you're in trouble; they constitute usable flotation in an emergency even if they aren't rated as such. That may seem silly to some, but every little bit of added buoyancy matters (I even screw the tops of juice bottles back on tight when I throw them in the trash for that reason...)It's a shame that the aftermarket offers such limited choices for bedding and cushions for boats. I don't know of any company making true air mattresses for berths, but there is a market there for someone...