In 2004, my 5'7" father weighed 268 pounds and was diabetic. He was in a dire state. He'd struggled with his weight for years, but some devastating news from his doctor gave him the wake-up call he needed: if he didn't do something to drop the weight, he would, in all likelihood, die in five years. So, under his doctor's stern recommendation, my dad underwent lapband surgery that same year. Sure, his life was at stake, but somehow, I don't think that was his biggest motivator to get lap-band surgery. I think his decision was about something much bigger than himself.
People do all kind of things for love, including watching sports.