A principle of life is we never get enough of things we love to do. This is the problem with masturbation, eventually it leads to imbalance in life. People may kid themselves they have it under control much the same as alcohol, but inevitably it gets to the point where it becomes an addiction, what is needed in order to be calm and capable of continuing with activities of life.
Masturbation focuses a person’s attention on pleasuring of themselves. Life becomes about the next pleasuring event that induces calm and relaxation — does this sound any different from alcohol dependency? Masturbation is hedonism pure and simple. If anyone thinks hedonism is healthy, they are living in self denial. People can choose hedonism. That does not imply hedonism is healthy.