It's interesting that when a book or movie is about infidelity, people give it poor reviews because they feel like the victim. They make it about their experience or their moral superiority.
It's a show. Just like any other show, it's not about you. If the story is interesting and captivating and the acting is great, you should rate it 5 stars. Nobody cares about your parenting advice or your cheating ex.
If you can't handle the subject matter, then stop watching and turn on the brady bunch.