The problem is that obesity is a complex problem. Not everyone who is overweight is a lazy person who eats Doritos on the couch wile watching daytime tv and wondering why they’re so overweight.
Smoking was easy: with extremely rare exception, smokers get lung cancer. Period. Smoking is one of the very few personal behaviors that basically guarantees you will get cancer. It also has the side benefit of annoying the living daylights out of people who don’t smoke which creates social pressure against it. It was pretty much a slam dunk.
Interestingly, the anti-smoking crowd won by convincing the public that absolutely any amount of smoking is so harmful to yourself and (crucially!) everyone around you that consuming even the smallest amounts is unconscionable. That's obviously untrue, but it's a very successful narrative (so successful that I suspect most of you will bristle at the suggestion that it's not true).
This was crucial because it convinced people that: 1) no, moderation isn't acceptable; and 2) every bit of intake is harming somebody else.
A truthful campaign couldn't have made these two arguments and so wouldn't have been as successful.
However, it really isn’t anyone’s business if I’m fat. You could argue health insurance is a shared risk pool, but under that logic, we’d be giving the government the right to dictate every aspect of your life and I am not willing up to give that freedom. Because why stop there — why not have the government mandate hours of sleep or require morning group exercises or require that you get married (since studies have shown that married people have lower heart disease risks.) It could get absurd, but the moment you let the government control even something small, it just keeps growing until we are quite literally Nazi germany where only “ideal” people are allowed to breed or receive permission to open businesses or get desirable jobs.
I’d rather a fat, free society where you can smoke if you want or drink whisky every night than a “healthy” society where the government literally monitors your every breath.
We talk about digital privacy with almost religious conviction, yet when it comes to things like public health, many are willing to let the government sit down with you at the dinner table.
“Get the government out of the bedroom..” I agree. I also want them out of every other room of my house as well. Government’s role is to provide shared infrastructure that is impractical for private individuals to provide for themselves. Government’s role is to have a legal system where contracts can be enforced. It’s role is also to provide for a common defense: protecting property, protecting us from crime. In short, a government’s job is to protect liberty. It isn’t government’s job to tell people what to consume. We saw Nazi Germany, the Soviet Union, China, Cambodia and now Venenzuela, why the hell would we ever want a government so ubiquitous and powerful that it could descend into such totalitarianism?
I have no problem with government providing for the destitute or providing public goods, but I have a huge problem with the government attempting to regulate the freedom of the individual under the guise that it’s “good” for society. Because “good for society” in Nazi Germany evolved into killing millions of people. It’s all incremental, the march towards a complete Orwellian nightmare. Russians never imagined that Bolshevism would lead to the horrors of the KGB and NKVD. Purges were never expected. Cubans never expected that supporting the revolution would mean millions of them would end up in prison or executed for thought crimes.
As far as “good for the economy” — the US economy got so powerful because of freedom; start messing with that and you could disrupt the very foundation upon which the largest economy in the world was built.
Sure, let’s fat shame — but let’s leave the government far out of it.
For instance, Australian adults are free to smoke cigarettes. But companies operating in Australia are not allowed to sell cigarettes without conforming to various restrictions and regulations. Those aren't the same thing.
So the analogy here would be that Coca-Cola is freely allowed to sell their goods, but (a) they're not allowed to advertise them and (b) when they sell them, they should say something like "sugary beverages cause diabetes" (if that's the valid and analogous claim) and show a picture of person with a foot that needs amputating.
If you still want to buy a coke when the bottle looks like a scene from a horror show, you'd be allowed to. But they'd have to give you a reasonable assessment of the consequences of drinking this beverage (which are generally not becoming a hot fit 20 year old on the beach). (Assuming that there is a valid link between regular consumption of sugary beverages and obesity-related health problems - it's not a topic I've specifically investigated but it seems to be the general assumption.)
You are making a non-sensical slippery slope argument. Heroin has been prohibited for a long time in the US, yet it hasn't turned into Nazi Germany.
Every government controls more than something small. Very few of them ever turn into Nazi Germany. So, no, I don't think that slippery slope is a useful guideline for evaluating real world questions.