I can empathize with your feelings as an ex-heroin addict, and you are definitely correct in that there can be mishaps injecting drugs. However with that said, I feel that too often this ROA is conflated with addiction and drug abuse and therefore recieves a lot of negative attention. AS LONG AS precautions are taken and one goes into it researched and knowing what to do, it is very viable and effective. I feel that too often people confuse the tool for the drug. I once had a guy who was a recovering (?) crack addict refuse to smoalk through my straight shooter because it looked just like a crack pipe and no other reason, thereby missing an experience.