How bad Habits Create Boring Stories

I've a friend who helps people plan and organize their lives so they can get greater impact, and he said to me recently that he's encountering more and more clients who smoke pot recreationally. My friend isn't a judgmental guy, so he doesn't brow beat them or anything, but he's asking his clients to consider the consequences of the drug. Now when my friend said this, I thought he'd start talking about how it's a gateway drug and so forth, but that isn't the warning he's giving his clients...