Drunken drivers (or high) are a danger to society, agreed? I agree wholeheartedly with that sentiment, if you're drunk or high at the wheel of a vehicle you should go to jail.
I've been to Italy twice (been all over off the beaten track too) and never smelt gange once, I don't know where you get your information from but I seem to recall we're top of the league for drug use, although to be blatantly honest with you I'm not concerned about Italy's drug problem right now. It's certainly not what the question is about.
The Sunday People article was an interview with the man thus afflicted, is his "anecdotal" evidence not compelling enough for you? You're very selective in your reasoning on this, you do drugs, you're ok so legalise them. He did drugs he was'nt ok, he's taliking nonsense, we see people taking drugs, they're not ok and we're uninformed.
Paul I've now answered all of your questions specifically, your smoking weed is different to your mothers' alcoholism, discuss.