Being obese is probably worse for you. NAFLD has long eclipsed alcohol related liver issues.

> Even simple unprotected sex can lead to massive medical problems

Even treated HIV is probably less of a risk to your long term health than obesity, but I'm not a doctor.

> Cocaine addiction. Meth

OK, yes, there are illegal drugs that are going to be worse for you than being fat.

I'll rephrase:

Being obese is basically the worst possible thing you can do to yourself that affects a huge portion of the population of the western world.

Very very few people are riding motorcycles without a helmet, even fewer are getting into planes flown by harrison ford, only a tiny tiny tiny fraction of the population even has the option of being a professional athlete.