It should include anything.
My point is that if we are to give one group a “choice” we should not take away the choice of another.
Age, race, gender and in some cases disability are the only legally protected groups.
Ex. I should reserve the right not to hire those that eat celery on Fridays.
Addiction can result from anything that results in a mood change. Gambling, Sex, Food, Pot, Alcohol, Cigs, Coke, Meth, Shopping, etc.
There are certain people that do these things and never get addicted, OTOH there is a small segment (8% or so) that will try something once and they are hooked. You only hear about these people.
The gubment has been trying to demonize weed for years and it hasn't done anything except drive it underground.
How about those that smoke celery just on weekends?