The reason for the recommendation is the performance of the two main characters. Men can't quit drugs, and women can't quit thinking about their dead husband.
There is one sentence I remember very clearly. It is a man who describes the feeling of being addicted to drugs. He said "do you ever been kissed by god" and then he said, it was like being kissed by god at first. And then every time you are looking for this addictive feeling, but each time you are getting further and further away from that feeling, the more you try to find that feeling, the more addicting you are.
More than just drugs. The same is true for love.
Don't let yourself get addicted to anything!
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