Now we know why Paige has the social problems he does...
Regarding the original question, I have always brushed 2-3x a day, occasionally flossing, and at 35 I have alot of "ridges" forming at the gum line, where the teeth are decaying.
So to the original poster: Don't be an idiot.
There's also the breath issues already discussed. Do the world a favor. Seriously, I used to work with this guy who's the nicest guy in the world, but I swear he must not have brushed his teeth in the mornings. He breath was so raunchy I would avoid meeting with him (even though it was necessary to get or work done).
The only reason we have to brush our teeth AT ALL is because of the insane amounts of extra sugar in our diet.
Are you nuts? You think brushing has only to do with SUGAR? I know that's the impression the world gives to CHILDREN, since they are into candy much more than adults, but geez, you're telling me if I have big chunks of chicken between my teeth, it's not necessary to brush unless I took in sugar that day? I'm exagerrating, but alot more stuff than sugar accumulates on teeth.