Most people in history were _not_ fat. It used to be _hard_ to be fat. Modern society and sedentary jobs make it harder to not be fat, so it takes discipline and hobbies like hiking and working out to actually get physical activity, and healthy diet is the key element. When everyone is eating processed food and doing very little during a typical day, it is hard to not be fat, but that doesn't mean we should accept that, we should push for a healthier society. There are things about lifespan, but also quality of life, ability to think, dealing with stress, _huge_ mental health effects, etc. Our entire society would improve if we decided to change things instead of giving up.