There are a variety of reasons, and of course there exists people who are in full control of their weight, but decide to not do anything about it. What I’m hinting at is that there are also a lot of people who suffer with deeper psycological issues. We don’t really tease depressed people with nick names and expect them to just snap out of it at any time. Hence I feel like we should generally treat heavier people with respect instead of assuming that it’s their active choice.