Gastric Bypass Cost

I understand that there are diseases, genetics, and other factors that affect weight but there is a point on the way to becoming so obese your life is threatened, that you realize you have to change.
In Ontario, if a certain BMI is reached, Ontario Health Insurance Plan covers the cost of getting a gastric bypass surgery or another extreme weight loss surgery. Gastric bypass is around $16000-$18000. As I tax payer, I don’t see why I should have to compensate for people who can’t control themselves. These people need help for mental disorders; not surgery.
We can judge people who smoke because of their addiction and express our belief/opinions of religion, etc., but it’s still so taboo to say ANYTHING to people about how wrong it is to be obese!!!
***When I say fat or obese, I don’t mean chubby. I mean people who are extremely unhealthy because of weight***