I think that needle exchanges will increase crime and should not be used nowadays in today's society. People do not realize that need exchanges are putting more criminals out on the streets, which is making the crime rate jump in ways that nobody could see coming, and is a result of the needle exchange program.
Yes, needle exchange programs increase crime and drug use. It is also poor public policy to condone crime by allowing for needle exchange programs. Law enforcement should not send a message that drug use is illegal while simultaneously trying to make drug use easier and safer. Needle exchange programs increase crime because they send the message to the public that drug use is ok under some circumstances.