Yes, it's everywhere now. Walking through my local shopping centre the other day, there were a couple of yoofs on a bench blatantly puffing away. Not exactly subtle as that stuff stinks and fag smoke is much more pleasant in comparison. I smell it walking past people's houses too. It's just another sign of the decline in society, anything goes.
In some ways I suppose they're less trouble doped up than if they're wasted on scrumpy or Wife Beater. But what may seem harmless is part of a much bigger network of criminality. Rudy Giuliani, mayor of NYC some years ago, realised that if you tackle head-on the low level crimes, the more serious crimes will look after themselves. He was proven correct with a big drop in crime levels.