I don't think every single person who smokes it is a complete loser, but I have noticed that, on the whole, most habitual users I know have done sweet FA with their lives.
I've been through periods of smoking it myself and it did me no favours (paranoia, anxiety, depression) and even now when I indulge at a festie or whatever I get the same feeling.
I think so many people are blase about it when actually it's a very dangerous drug. A close family relative has been smoking since early teen years and developed bipolar with psychosis, I believe this was strongly to do with the fact he's been using it since childhood and even now as a grown man uses all day most days. He now has a serious MH condition that's turning everyone's lives upside down and still uses!
He also becomes abusive if he can't get his fix - stomping about, petulant, aggressive. It's awful.
Plus it's so strong these days! The makeup is not the same as it once was, the psychoactive componends are bred to be up to 10, 20 times stronger than say 20 - 30 years ago, without the substances within it that reduce the psychotic effects. You simply don't know what you're getting when you do get hold of it.
People have their head in the sand about the danger of it, and I think it's sad.
It's turned long term friends who used to be sociable into hermits with depression, anxiety, grumpy.
People also never seem to move forwards with their lives - completely hooked.
My view has completely changed on it over the last couple of years, I say be very wary of anyone who has a long term habit.
This may sound like overkill. I am sure some people can use infrequently and be ok but I've seen the lasting damage it can do and am highly skeptical.