if the evidence becomes overwhelming, the health costs rise...
This argument is starting to replace the "but think of the kids" argument. It's pointless, pulled out when someone wants an emotional reaction.
Sure, obviously some thing(activity, food, chemical,
The point is that at some point everybody will get sick/hurt, incur medical costs and die.
Regarding the medical costs, does it really matter whether the cause was sitting, smoking, obesity, flu, cancer, accident, etc.? If you are worried about the burden of medical costs on society in general, the people who die suddenly just around their retirement age would be the least burden.