-- Sleeping on waterbeds. Bad allergies/asthma in family meant that ever since I can remember, all my household slept on waterbeds. And my best friend growing up and her family all had waterbeds (because they were rich, not asthmatic). Then I got to college and started wondering aloud why I couldn't bring my waterbed with me, and promptly discovered that the rest of the world thinks waterbeds are reserved for A)'80s millionaires B)porn C)'80s millionaire porn.

...I am currently writing this sitting atop the same waterbed frame (now filled with a custom-made, non-water mattress) that I've used since I was five. You just can't beat the extra height plus 2 rows of drawer storage!