Conclusion
The only sensible thing that Addie did was to leave her magazine job. She had a voyeurism problem and being exposed to all of that flesh was very unhealthy for her.
Readers must understand that nothing that Addie liked was abnormal or unhealthy! She liked to see naked bodies and to masturbate herself. The only thing that was unhealthy is that this was her sex life exclusively.
Whatever sex acts a person prefers, contact with fellow human beings is essential. Addie had simply carried her passion for 'watching' a little too far!
Too much of any one thing does not make a well-rounded sex life and too much solitary masturbation means that a person is missing out on all of those wonderful shared post-coital cigarettes!