Earlier quoted context omitted.
As someone with no stake in this, I would rather have all of that decay in one place I can avoid rather than strewn about my city.
But realistically that does nothing to solve the problem. We could just designate SF the safe injection site for the USA and the problem would be out of view for the rest of the population.
Now for the junkies, needs to be more than a safe haven to shoot up and definitely agree with your sentiments. I know they offer more than that, but some people just want that and that's the problem