Plus there's the whole issue of exercise and especially exercise outdoors being one of the most effective treatments for many types of mental illness. I have all the sympathy in the world for people with actual mental illness. But only if it's clear they're actively working on it. If someone's fat it's obvious they're not going out of their way to try to cope with it. And if they're not, I don't see why anyone else should go to any extra lengths to deal with their issues either.