It only becomes a "problem" (for me) if the government tries to force me to pay for the consequences of other people's obesity (or other personal/lifestyle choices). And I might add, vice-versa.
The government has not only turned us into a nation of reciprocal parasites it is by dint of this turning each of us against the other. We must now view our fellow citizens as another potential threat to our liberty or our pocketbook as each one makes claim for services or a demand for a new law.
It is disgusting - and it is going to lead to violence.