Drug Alcohol Rehabilitation
The problem with drug alcohol rehabilitation is that you're dealing with addicts. Addicts are not like normal people. You can compare them to the ground. If the ground is flat, nothing slides down it. You can rest pretty much anything on that flat surface, and the things' behavior is inert. It just sits there, doing its job being flat ground. An addict is like steeply sloping ground. If you put almost anything on it, it's going to roll down. It might not roll immediately, but the slightest disruption and whatever you've put on there is going to come crashing down, just because that's how gravity works with angles.