I imagine that if it became reasonably inexpensive and easy to obtain, people will ingest it through foods instead of smoking.
You will still have the problem with on the job drug use and law suits for impaired judgement on the job. Think about hospitals, every time there is a medical error, the family is going to demand that the doctors and nurses on duty be drug tested and if anything shows up, they will sue both the doctors and the hospital. It will be the same for oil refineries and other jobs that require a clear head. There is just no way around it.
Yeah, if it becomes cheap enough, all those 47 percenters can stay home and eat marijuana brownies and cookies and numb themselves into being happy because the sure as heck won’t be able to do much else, except maybe government work.
Vaporizing it is much healthier and has about 1% of the stink of burning it. (Not that I do either, I just know).