Ok so I admit I didn't used to floss but now I do everyday and I can't believe how much crap you can get out from between your teeth! The thought of that sitting there all day really grosses me out.
I recently went away for a couple of days and forgot to take any floss so when I got back and did floss I got loads of chunky bits of food out and they really stank just like bad breath. Bleurgh!!!