I found it helpful initially but there are widespread problems, some of which have already been highlighted:
1) At the start, therapy often works as the patient is just starting to open up about their problems. This process of telling someone about long hidden issues can be extremely therapeutic. Patient sees the good in telling all. The therapist listens dutifully and patiently.
Eventually, in my experience after about 6-7 sessions, everything turns rather stale and the therapist is barely justifying their high wages.
Woe betide, if after having been a "loyal customer", you cancel an appointment. They charge you full price and don't care about what may have caused your absence. And they still think you'll have trust in them after basically conning you out of the little money you earn.
2) Their solutions are often repetitive and useless. One had me breathing, wiggling my toes and looking around the room for peaceful objects. Instead of these infantile solutions, what I really needed was a diagnosis or a practical plan to go forward in life.
3) They love to blame your parents. It's such an easy hit that it's almost shameful how many of them still continue to offer up this widely discredited and unhelpful formula of hatred.
4) Money money money. That's all they want. As mentioned previously, you could sit there and moan for your entire life and they will gladly keep cashing the cheques.
5) After a while, I felt incredibly bored by the whole experience. It wasn't my Dad, I won't wiggle my toes and I won't breathe like a beached whale.