Whose fault is it when children become alcoholics or drug addicts?

When we see statistics of alcoholics and drug addicts, the tendency is to blame negligent parents. We ask:  Were they not able to guide their children? Are they absentee parents, or is the blame on the individuals themselves who use alcohol and drugs? 

When we hear our families and relatives in such kind of situation, we must not look at who’s to blame. The right thing to do is to look for solutions. Definitely, the aim of rehab treatment centers is to treat and motivate the individuals who became alcoholics or drug addicts to aspire to return to their families as whole individuals.