IIRC, the last time we bought a bed, about 3 years ago, the store had a baffled water bed on display. (I'm sure it was thinking, hey, what's going on? Who are you people?)
When I lived in southern Arizona without air conditioning, which is more common than you'd think, a nice cool water bed was just wonderful. I wished I had one and would gladly house sit for anybody who did.
However, incidents like my friend Ann and Bob had were far too common. They rented a little house which had a master bedroom which had been clearly added on, not part of the original structure. They put in their water bed, filled it up, and watched the extension separate from the rest of the house. Their landlord knew they had the water bed, or it would have been worse, I suppose, than merely losing their damage deposit and having to move out right away.
Maryn, who hasn't thought about water beds in a long while