I think they help some people

I'm definitely not in the group who thinks they are never helpful to anyone. Some people really do need to talk about their lives and get feedback (we don't get the freedom to do that without risk of police involvement), and some people are genuinely mentally ill and need a medical doctor to help them.

In many cases though, I think it can be a crutch or an indication of having a lot of leisure time for introspection, wondering what's wrong with ourselves when there really isn't anything wrong. Dealing with issues in our lives more times than not is just a regular part of life.