I'm someone who gained a lot of weight in a short period of time and became obese. It was a really **** experience. Getting out of breath going up a flight of stairs, having to sit down to tie shoelaces, finding that you can't get laid easily, etc.
Which is why I did something about it and lost the weight. So I was miffed why so many others don't take control over their own weight and lives.
But when you look at modern British culture, it is easy to understand. Many Brits genuinely believe sitting on your backside all day in an office, only taking breaks to waddle to the toilet or reach for a doughnut constitutes hard work. Many drive everywhere because they are too idle to walk or cycle. We wallow in a capitalist culture that promotes instant gratification and excessive consumption. And then we teach our kids these habits, creating an even fatter generation of youngsters.