` I hike, snowboard, go to the gym and eat sensibly. That's all the "weight control" I need.`

So you are likely in an income bracket that enables you to have an active lifestyle outside of work and take the time outside of work to cook, in addition to probably other hobbies. this is not a criticism of you, but if I had to guess, you simply have a life that many other's do not. I work out and take care of myself because I make $300k+, have less worries and responsibilities, and I actually have an easier job than when I was making less.

A lot of people don't have money or don't have the time for working out and making the correct meal choices. Yes, there are people who have money and time and are still overweight, however that is not the norm as you go up the income brackets. Many poorer people have long work days, with an additional long commute, and are more likely to have kids, meaning they have no time for themselves. They're not gonna go to the gym if they already have a long day and they probably aren't going to make healthy food choices when they're already beat up and have not a lot of time for themselves.