It has nothing to do with the synthetic, people destroy themselves on straight-from-the-poppy-plant heroin as well.
Unless you're talking about people in pain who were forced to the street, after Dr's were (en masse) hazed into stopping pain treatment. In that case, I get your point.
I'd like to less misery caused by heavy-handed drug policy — and it seems to me that decriminalization (and perhaps even legalization) is the way forward.