I take extreme care with my teeth. I floss after every meal and before I got to bed and before I go to sleep. I brush at least twice a day and use mouth wash to get rid of all the nasties that still seem to remain. I know I can't get my mouth/gums/teeth 100% clean, but I can always try! =p
My mum had to get her gums cut open and cleaned as she developed gum disease, where her gums began moving back from her teeth. This would eventually lead them to lose their strength, and then fall out. I obviously don't want that happening to me, so I do everything I can to keep them in good condition.
Plus everyone loves a shiny, white smile. ;)