There are NO GENETIC reasons aside from Prader-Willi Syndrome that causes an individual to uncontrollably eat. The fault lies with the obese person. A jacked thyroid and slow metabolism can only account for so much. It's not enough to make someone medically obese, unless they eat an unhealthy amount of excess. Depression and all the other contributing factors aren't a legitimate excuse for staying in that state. Should society coddle and enable drug addicts, alcoholics, and excessive smokers? Obesity stems from an addiction to food. Overcoming it isnt an easy task to accomplish, but it's within an individual's control 9.5 times out of 10.
I think the same about everyone that asks for government support, after purposely abusing their body with substances. Feelings have nothing to do with it. Fiscal conservatism and wasted tax money does.