That's fine for any given individual, but in aggregate you should not be surprised that systems which are designed to take advantage of human psychology to achi

That's fine for any given individual, but in aggregate you should not be surprised that systems which are designed to take advantage of human psychology to achieve a result perform exactly as intended. You bring up heroin, but heroin is a heavily regulated controlled substance precisely because it's an example of something which people in general cannot be reliably trusted to control themselves with.