As such, there is no inherent superiority to laws that currently exist versus those that don't. We should change laws as we see fit so that we are creating a society where all humans can flourish.
Maximal personal freedom leading to a maximal 'good' of human society is just a belief, not a fact. And like all beliefs, they are subject to debate.
Sugar is a carbohydrate, and carbohydrates are nutrients. As with all things you put in, or do to, your body, you have to do it in moderation, and with consideration. Homeostasis is your friend (usually!).