Shoulda coulda woulda.....Well all say that. Sometimes we dont want to see the signs or sometimes because we are naive to drugs (since we arent drug addicts) we dont know what signs to look for or what those signs mean. I was always under the impression that crack/herion addicts didnt take alot of showers because the steam from the shower would flush the residue out of their skin. But what difference do signs really make. At some point you saw them and you did something about it. And its always easier for friends or family to say "boy, you shoulda seen that comin" when you are saying things like and then this happened and then he did this....
Hindsight is ALWAYS 20/20!!!!