I long and short answer is no it is not common sense and yes I wish it was. If the only problem with addiction was using then stopping using would be the end the problem. However when it comes to addiction there is a reason why people use in the first place and if that reason is not address in some way or form they go on to do one of two things. They relapse or become a "dry drunk" meaning they are sober however they are unhappy with life as a whole. Most people hate being a "dry drunk" and relapse. So no it's not common sense.