"In a letter to her absent daughter, she likens maternal love to an addiction, and the second half of her story follows the familiar, agonizing stages of recovery, relapse and at least partial or potential redemption."

A.O. Scott on Almodóvar’s movie "Julieta", based on three stories by Alice Munro.

The addiction is not so much maternal love I would say, but the desire to abandon and to be abandoned. Needless to say that some are more addicted than others.
Watching "Julieta" is definitely not a waste of time.