Very good discussion lads! Some thought provoking posts.
Your potential new area of employment sounds interesting, Fremsley. I'd be interested in hearing more although don't want you doxxing yourself. Only Brenty gets away with doxxing! 
Regarding Mo's comments about putting them down if all else fails, I don't believe he's coming from a position of hate but of logic and compassion for the victims of junkies.
The person would have already been given a serious second chance at making something of their life, one which was paid for by taxpayers in spite of crimes they may have committed to fuel their habit. It'd be hard to continue to try and help someone if they keeping causing harm to people again and again, especially if they didn't show remorse or a willingness to change IMO. Why should the junky get chance after chance when the victim who stumbles on a needle, or gets robbed or killed may not get that luxury, through the fault of the junky?
Personally, I wouldn't put them down, maybe a life in jail or somewhere more secure without chance of them feeding their habit.
I have one particular source which I won't try to force upon you but in which I believe answers can be found. Addictions can't be beaten by replacement or by doing it legally or 'safely'.. they can only be beaten by the person not doing the thing and keeping away from it and those who may have it. All IMO of course!! 
I also don't think we should treat these people as financial statistics by saying rehab is good economically. I'd be willing to pay good money to help people have another chance, but it couldn't go on forever.
It's in the balance just now Hardliner but i'll happily share information when I can
I do 100% agree with you about addicts wanting to stop but I do believe that there has to be more done to give them that opportunity. Perhaps less stigma around addiction would help as I can only imagine they are constantly fighting a losing battle. Pretty sure Dundee is one of the few Cities that doesn't have a rehab centre which in itself is rather alarming considering the magnitude of it here, and I hope now this will be addressed.
I think if we can start taking them by individual cases and understanding that some do want help and not everyone is mugging old ladies. Generalising them all as scum is part of the problem imo. The amount of needless crime and violence I've seen due to alcohol far more outweighs what I have seen due to drug addiction.
The SNP have legislated AGAINST alcohol.....but you want them to legislate FOR drugs.
Fückin really?
Not sure why you keep using the SNP as some stick to beat me with. I'm not, Buc 
My point on the alcohol is about the stigma about each addiction and how we view addicts compared to some dafty in the street smashing up cars and assaulting folk
I’m not using the SNP against you.
Just pointing out some facts.....although I do believe you are in the camp of ‘everything will be better with independence’.