When I was a kid, I liked watching my parents brush their teeth. They don't have real teeth though, dentures. It only occured to me that I didn't find them having dentures at a "young" age weird. I only asked once and only when I was older. I guess I just assumed by the time one is thirty, they lose their teeth. Hm... Hopefully, the cause of their predicament is poor dental hygiene and not some hereditary factor. I really love eating with my real teeth.