per-capita, crack and meth heads are far and away much more dangerous. Now you're making statistical claims (which is progress of a sort); let's see the statistical evidence.
defend crack and meth use
Nobody's doing that - you're hallucinating.
I assert that crack and meth users are far and away more dangerous and unpredictable than alcohol users. You say that they are not. Around these parts, that's called 'defending'. You are defending crack and meth use on this basis.
Stop hallucinating.