Watch “Sugar: The Bitter Truth” on YouTube. The doctor explains how your elementary teacher is wrong.
Also cut back on sugar, with good results. In reasonable amounts, sugar is fine (and yummy), but a couple-o-cans a day habit might be bad for you.
Still, the health effects of eating or drinking sugar is besides the point, both when it comes to sugar subsidies and quotas (yeah, supporting selected non-essential crops is a key function of federal government!) as well as Bloombergian nannyisms (banning large sodas, etc.).
People are responsible for their own health, and unless they are being deceived, the government should simply butt out.