People at work bug me about drinking water instead of soda. I'm overweight, BMI of 28, so to me it seems obvious why I shouldn't be drinking sugar water. But

People at work bug me about drinking water instead of soda. I'm overweight, BMI of 28, so to me it seems obvious why I shouldn't be drinking sugar water. But try explaining this to them, some of them are 3x my weight at least and are offended by the notion of somebody smaller than them wanting to avoid becoming like them. It's a very delicate subject, trying to explain my desire to be healthier to people who are morbidly obese and see nothing wrong with it.