Oi, this is a flame war waiting to happen.
I don't like the idea of people smoking pot, or anything really. I guess I'm for medicinal legalization, but I don't like recreational use of it. I know it's less harmful than alcohol or tobacco, but if not done right, it can still be harmful.
And even when done carefully, recreationally, I don't like what it does. And what I'm told it does is give someone "a sense of being happy all the time" or something along that, I'm paraphrasing. Also, a small burst of creativity. Neither of which I see as redeemable, or admirable. Or at least, needing/using a drug for that purpose.
I also find that people get into it for some... fairly stupid reasons, but if someone has a good reason enough to have been using it recreationally, I may get a different opinion.
It's not that I hate what it does, so much as I hate the reasons for it. Though I guess that's just from knowing to many full-out stoners my age.
Basically; Medicinal - Sure, Material (making things from hemp) - Sure again, Recreational - I'm not for.
Per the whole economy thing, well, I don't know anything about the economy, but the idea of making money from someone's recreational use of marijuana strikes me as a bit shady. I know it's done with tobacco and alcohol, and a lot more, but it's not like I find that any better. Understandably useful, but not morally better. Then again, it's not a perfect world.