No one really smokes the leaves. It's the buds where it's all at.
But I wonder this also. I'm a weed head and my liver and kidneys seem fine. I don't suffer from weed Paranoia. It can come from weed, just like it can happen if the wrong people are around me.
What my amateur opinion on weed is:
It's a calmer isn't it? It slows the brain a bit. Some call it dope. And for a good reason. But for me, it calms my mind and reduces the erratic and lightning quick thinking patterns.
Also it's easier to blend with other people. Cause I'm stoned. I like the feeling, it doesn't effect me like alcohol does. IE: be loud, take risks, jump about etc. It in my opinion doesn't reduce inhibitions. That's what the drink does for me. If I drink I lose those then and can really let myself go.
But the weed for me I'd more like a coffee. If I'm groggy in morning a cup will get you to wake up. And keep you going.
Weed, is like a coffee in reverse. It sorts my mind, I organise my thoughts and understand what bothers me.
But it's also a 'relaxer' in the evening. Music, weed and food. It's my little fix also...
Plus.. it's a recreational activity I do with mates. When wet all stoned were all on a similar level.
For me it's perfect. It serves a multi of uses its not addictive, it don't kill. It don't make me or many others smash windows, fight etc etc.
You couldn't even tell I'm stoned.
Hope that answers some questions.
PS I've been a weed head for 20 years so please don't patronise me anyone with stays and wiki info. Im a seasoned pro....
J