It's widely seen as less of a simple choice to become obese, as it is to take up smoking for one thing. Presumably if you met someone who'd been regularly given cigarettes since they were toddlers, you would have a certain degree of sympathy for their issues as adults. There is also the simple fact that abstinence from tobacco is simple, and easy, and it works for everyone who doesn't choose to smoke. Most people don't attempt to have a "moderate" intake of smoking after all.

Meanwhile food is a bit harder to manage if you have a problem with it, don't you think? So, for people talking about a "lifestyle" ignore the crazy people. For people talking about realistic challenges beyond "suck it up fatty", you might want to pay attention.

Finally, "honor"? I don't think you have widespread discriminatory hiring practices against the "honored".