Tracer, I am genuinely shocked by your conscientious and thoughtful approach to this issue. I guess nobody's wrong 100% of the time.
Shark Tits, were you actually paying out-of-pocket for the drugs you received from this clinic or was the cost covered by the government/some insurance plan? I don't know exactly how things work in the US but the supervised injection sites I know of don't cost anything to use and don't actually supply drugs to people, just the paraphernalia and a clean, safe, medically supervised environment to use them in. Some clinics in Canada and the EU have actually started regularly supplying free doses to addicts though, and these have apparently been even more successful both in reducing crime and disease and allowing people to get back to some semblance of a normal life (i.e. holding down legit jobs, looking after their health, re-connecting with friends and family etc.) "Your tax dollars into government coffers" is a nonsensical statement anyway. Aren't your tax dollars, by definition, already in government coffers once they're collected? If they wanted your money so bad why wouldn't they just, you know, keep it instead of putting it into expensive clinics to try and squeeze profits out of a bunch of junkies who (newsflash) don't have a lot of disposable income anyway. Sounds like nobody's making much of a profit here except for the drug companies who produce the shit and the private clinics who sell it for a hefty markup to wealthier addicts.
Basically, as Jsoy said, this issue comes down to whether you prefer a harm-reduction or a 'upholding public morals' approach. The morons who support the latter will probably never get past the fact that these places tacitly condone drug use by using public funds to facilitate it (won't somebody think of the children?!) The thing is, for their approach to be justified you need three things: 1) actual moral consensus within society that drug use is inherently bad and must be stopped; 2) cost effective means of preventing the importation and use of drugs and 3) for your anti-drug policies to ACTUALLY WORK. In the current 'war on drugs' none of these three conditions have been met.