If fats had the same insight into their condition as smokers  I'm pretty unimpressed by the average smokers relation to their habit. Yeah, you get a superficial admission that it'll kill them eventually. But nine times out of ten they brush away the vast majority of what the habit entails. Much like fat people they focus on a distant end as if that's the only downside. And totally ignore most of the negative health effects that come in the present and near future. I think intentional obliviousness is just part of substance abuse in general. Whether it's abuse of a legal drug, an illegal one, or food.