OK, you have a right to fall down laughing. I must not be getting enough sleep. I'm still not adjusted to changing my work schedule. I worded that wrong. I meant to say "I'll bet much of the data collected that shows clean needles reduce disease are flawed." I'm sure it reduces rates. Just not quan y. I say this because of the gained knowledge of people practicing better safety in general. Does a free needle exchange really work when all a conscientious user has to do is boil the needle? Maybe store it in alcohol?
I have a hard time believing it has to do with availability. It has to do with education, knowledge that past practices are not safe. Only those who care about reducing the risk will reduce the risk themselves.
I see it like birth control. Free birth control has caused more pregnancies, not less. People get wrapped up in this false security yet it isn't 100%. Condoms, pills, etc. fail. Carefree sex with lower pregnancy rates still amounts to more pregnancies. For drug usage, Lower rates with higher usage can actually end up being more cases.
I refuse to believe it does not encourage more drug usage. Let me rephrase that. It removes a fear, or stigma, that would otherwise prevent someone from trying the drugs for the first time. I'll bet if there was a study that addressed that aspect of it, we would see a growth that otherwise would be less growth, or a reduction of usage. Keep in mind, studies have not looked for such trends.