You're right, taking drugs regularly will screw your body up but takin one joint won't. I know that. I prefer to stay away from drugs all together. You never know what might happen. I don't believe I was taking anything out of context, i just don't appreciate someone telling me that I know nothing about something when they don't know me at all.
And no my uncle didn't get insanely depressed and end up in a psychiatric ward for taking one joint, but that doesn't make doing drugs on a rare occasion any better in my opinion. I'm not pushing anything on anyone, it's a free country, you can do what you want, but don't expect me to get in on it with you.