I'd say it goes even further than that. The person who jumped off a cliff made one very stupid decision. Fat people look at that cliff constantly throughout every single day, for years or even decades, and decide to make the leap every single time. Every meal or snack is a chance to decide enough's enough. Every morning looking in the mirror is a moment where they're forced to reflect on what they've done to themselves. And to decide that they're not going to do anything to stop it.