JStalin, i tend to agree. Weighing in here, :) as this pushes a button for me....
Morbid obesity makes a strong appearance in my family tree. I have a genetic tendency to gain weight, and keep it. As a result, i work out like crazy and am VERY careful about what i eat.
Of course physical ability and health impact weight. We're all dealt a different genetic hand...
Each individual has to balance his or her 'hand' , and make healthy choices in accord with what he/she is dealt.
MOST who are vastly overweight, in my experience, don't make any consistant effort to get physical exercise or SERIOUSLY monitor their intake.
It's all about what you make a priority...