That stance seems philosophical. Science doesn't need to be deified. Science is merely human discovery and current understanding. It's human discovery in terms of knowledge and wisdom that can help us. It's what JohnnyBGood was saying. Human discovery lets us know and wisdom gets us to follow through to apply what we know.
I think you're selling humanity short. People DO want to stay active and stay healthy when they are properly motivated. BUT how about focusing more on getting more people motivated without having to take a magic motivating pill to experience these benefits through knowledge and wisdom? Lots of ways to motivate people to exercise and make healthier dietary choices. After all it was you in another thread that stated we are already a culture too accustomed to the mentality that a magic pill will solve our problems and account for questionable lifestyle choices/behavior? I think on that same thread you mentioned people needing to take greater personal responsibility too which doesn't seem to jive with the notion we can just pop pills to change/fix the consequences of our behavior or to motivate us. Although, a magic motivating pill could be another tool used on a short term basis in extreme life threatening cases to get people conditioned to getting fit. And, I see the tone the article was taking with mentioning gastric band bypasses. etc.
But, there already is a magic leaf that motivates people to move and exercise - it's called coca - which IS NOT to be confused with the use of the illicit street use of cocaine! The Bolivian and Peruvian cultures use it to great effectiveness in this manner when they chew it. How about caffeine also? And, caffeine does not equal coffee! You can have the potential benefits of caffeine without drinking coffee! Caffeine comes in pill, food, and other drink forms.