Eating a pizza, unhealthy yet pleasurable
Riding a motorcyle, risky yet fun (I believ 16x more likely to die)
Drinking coffee, a stimulant, unhealthy

So being "unhealthy", "risky" or "a drug" is fine. But obviously the goverment has some responsibility.

About 5,000 people a year die in motorcyle accidents, and you are about twice as likely to die if you take a bike compared to a car. So that's 2,500 deaths a year the government could prevent by banning motorcyles. And all the extra injuries as well, probably 99% of motorcyle accidents result in injury. The rate of death is 66.7 per 100,000.

So if you support motorcyles being legal, should you support any drug being legal that has a death rate of 66.7 per 100,000 or less?

Some drugs have other concerns besides death, but I left the amputated arms and smashed in faces out of the motorcyle equation too because I didn't want to take the time to look it up.