On the other hand, being overweight takes years off your life:

"Specifically, we found that BMIs from 40 to 44 were associated with 6.5 years of life lost, but this increased to 8.9 for BMIs from 45 to 49, 9.8 for BMIs from 50 to 54, and 13.7 for BMIs from 55 to 59."

I think for some people the roi is measurable and reasonable.

https://irp.nih.gov/blog/post/2020/01/extreme-obesity-shaves...