"The government has to be able to reward and punish certain behaviors for society to move forward"
Says who? The only punishment for behavior should be for behavior deemed tot eh direct detriment of others. Someone peeing on my house or in my yeard is a detriment to me. They are violating my rights as a property owner. There fore it is against the law (has been for many years in the US) to urinate on public or private property in populated areas. But there is no direct harm to anyone other than myslef should I choose to have a Super Size Coke, Super Size Fries, and two Quarter Pounder w/ Cheeses from McDonalds for lunch (they don't do super size around here any more, but that was their call to make, not the government's). Over time, that diet would be bad for me. But, as a person who does watch what he eats, I can say without concern, that all food products can be consumed in moderation. To have super sized Coke, fries and double QPC once a month is not going to cause you significant harm. To eat it three or four times a month (once a week?) - not so healthy for you and you will find it hard to maintain a healthy weight and feel good. To eat it three or four times a week/every day, probably gonna kill you before you reach retirement age.
So all things in moderation. If the government wants ot enforce anything realting to food stuffs, require full labeling on packages (better than they currently have) and require restaurants to have "mini" health charts on menus (basic caolires, fats, carbs, and sugars) and have a full one like they require on prepackaged food readily available to give to customers that want to see it.
That way government is requiring producers to inform consumers, but not restricting choice.
@goldfinger - Government subsidies are not analogous to government restrictions. Encouraging alternative energy sources is not the same as banning other energy sources. And even the energy discussion in general is not analogous because non-renewable energy is, well, non-renewable. It is a limited resource in theory. If you use more than the Earth can make over time, we will run out. Sugars and fats are in abundance. We will not be running out of them. If anything, the argument could be made that we are running out of clean water so we should ban pure spring water sales for drinking purposes and everyone should have to drink products made from tap water (iced tea, kool-aid, etc.) Not saying I agree with the stance (God knows I love my San Pelligrino), but the argument *could* be made.