Actually, your mother is probably right. The only things that are unrelated to weed are the parts about cliffs and beating your wife. First of all, drug is defined as any substance, organic or chemical, which alters one's state of mind. Does marijuana do this? yes. Second, THC is much more concentrated than it used to be and many people can get addicted because they need a constant supply of of THC after smoking for so long. If you disagree, then I'd like you to try to stop smoking for a year. I guarantee you'll be irritable and have withdrawal symptoms at first, I've seen it happen. Third, of course there's probably some guy who wasn't able to hold a job because of weed. Bottom line is, it can make you lazy if you don't even attempt to be active and just smoke too much. Sure as hell doesn't sound unreasonable to me. And also, yes I know driving under the influence is negligble, but it truly does make people's reaction times slower. You can't argue that you'd be just as good a driver if you were high because it's simply not true. Sure I agree that alcohol is a far worse substance, but that has nothing to do with anything. People need to stop trying to justify their problems.