Food, gambling, etc. are all backed by hordes of brilliant well paid people trying to get you to ruin your life so they make money. On the other side is just regular people like us stressed out trying to survive.
This isn't some "freedom" issue, it's an incredibly huge power asymmetry and I think "we the people" need protection from these forces
However, if you want to gamble, more power to you. However, I don't want protection enforced by the government here. I want the government to protect the air, water, military, forces of nature, etc. I do not want them regulating and optimizing every facet of my life.
Drinking is objectively a drain on society, but you can see how well banning that in America went.