Is this mostly a US drug? I never heard about it in France.
I can't believe people love it so much without thinking about the actual source of their problem.
The source of the problem is that animals are wired to eat as much food as possible as quickly as possible.
You can't blame half of the population for something that is deeply wired into our brain and bodies.
I think you can ultimately blame them, but you can also accept that for many it's a very difficult problem to overcome and that finding other ways to tackle it has value to the individual and community.