Hi and Welcome!
I think Rosie is right in that it's down to the individual when it comes to trying to get a diagnosis.
I have found that it has helped me in some ways but not been such a good thing in others.
Finding this site has to be one of the major benefits of my diagnosis, I would never have known about it otherwise but it seems like you are ahead of me on that one! Another big thing for me was feeling confident that there was a reason for my pain and in feeling justified when explaining it to others. Saying "I have" rather than "I think I have" was a turning point for me. I think a lot of that is down to the fact that I was going through counselling at the time and was (still am at times) hugely lacking confidence. I think knowing what causes my pain (as best as we can know) has also helped me to manage it more easily too. Without that diagnosis I would probably have kept on wondering if it could be something else that caused the pain and I'm pretty sure I would have kept on doing exercises that were no good for me in the hope that I would one day see an improvement!
On the down side, It has frustrated me so much!!! Every GP and physio I've seen so far has told me different things. All seem to know that I have HMS but non seem to believe that it is anything to bother about. It does make me angry and upset at times. Because of this I've decided not to push for a diagnosis on related issues. I am becoming more certain each day that I have fibro but don't need a GP to tell me this now. If I have it I do, if not I don't but it won't change the symptoms or how I manage them.
I think what I'm trying to say is that its not only up to you as a person but where you are in your life at the moment and what you feel you will achieve by getting/not getting a diagnosis.
Oh...and don't worry, not everyone babbles as much as I do!