Having just read this question and not done any research, this is my opinion:
I think an addiction of any sort is a problem. It suggests an imbalance in somebody’s life and that they have had to develop a external crutch on which to rely, rather than on their own inner faith and strength.
From what I’ve witnessed, an addiction is a behavioral symptom of the root problem, not the cause; it’s a coping mechanism that may provide solace in the short-run, but will ultimately prove detrimental over time.
Maybe Jude could offer more insight (she recently posted a question about “addiction sickness” and offered some valuable insight into its cause and treatment).