Some people are in so much willful denial about it that it doesn't help anyways. I know; both my parents are hams. I've tried, and tried, and tried. A decade of trying and I'm done. My father is 50yo, 300+ lbs, can't sleep without a CPAP machine lest his throat fat collapses and he literally suffocates to death.  I just had my first kid this year; I've resigned myself to the fact that my daughter will likely not remember her grandparents as they eat themselves into an early  31e4   grave.  I've mostly recently told them exactly that. Not 24hrs later my dad sent me a picture of him eating two fucking slices of pie piled high with ice cream with the caption "having yours for you since you're not here".  teefuckinghee. So yes, I think some people are happier being fat, or, at least, beyond caring either way it's not worth my time.