I've used tobacco products perhaps from 0 - 5 times a year from adulthood on. While not "safe", pretty low risk. I have the same relationship with caffeine and alcohol. Nothing can be all that enjoyable if you do it everyday.
I've often thought of a sort of "vice license", at the age of authority you can apply for a license that you need to buy things like alcohol and tobacco. Everybody gets one that applies and is of age. Then you can voluntarily choose to limit access to a particular vice, and if you are a danger to others a court could limit your access as well.
Casinos already have this model, it's called self-exclusion[0]. It seems like the most humane solution that allows people to still be adults.
[0]https://gamban.com/blog/ban-yourself-from-online-gambling