Tell me about that. OH GOD. How many times I heard that, not mentioning seeing it on the internet. If anything it only shows how incredibly stupid weed makes you after years of everyday smoking; as that's the only serious argument they have on their side. Weed is completely non toxic.Stoners tend to pull up the "weed never killed anyone!
I completely agree with you, if you compare alcoholic with heavy stoner, alcoholic will probably be in worse physical condition (ALTHOUGH.. since weed completely kills motivation to do anything, you don't exactly see muscular fit stoners eating healthy either!) while the stoner will be so slow and apathetic its scary.
I posted about my weed use several times on these forums, don't wanna repeat myself, let's just say weed didn't completely ruin my life but it did take A LOT of it. And mostly when I was 17-20 years old - the fucking best years of anyones life. I won't get those back.