Chesty, I think we all know that pizza is fattening. The reason we're fat is that we eat too much of it. We don't need a nanny state telling us what to eat. We know that everything good to eat is bad for you (pizza, Doritos, steak fajitas...), and everything that is good for you tastes like crappola.
I personally choose to eat pizza and be fat (but happy at least when I'm eating pizza) than be thin and miserable all of the time. It's my choice. It's not Obama's choice. Period.