[quote=@Mammalia]
<Snipped quote by Galaxy Raider>

It might have something to do with whether people under the influence of Marijuana hurt others at a high rate. But I don't know much about it; that's just speculation; I don't know the stats.
[/quote]

Other drugs have that problem, but not marijuana or some others. My biggest concern for marijuana, if any, is that it would affect nationwide work ethic/overall performance in jobs.