I expect that your feeling of satisfaction and well-being "after transition" will depend somewhat on your expectations.
I do actually think that I ended up looking and being about as I expected. I also found that the more I became feminine in my appearance, the more satisfied and happy I felt about the person I was becoming and presenting to the world.
I can't say that life was exactly as I expected it to be and that was simply that I had little idea of what life as a trans woman would really be like. Every person considering transition and unsure about it should know that it is has unique challenges. No matter who you are and how well you pass, there will be challenges in this world.
For one, you have to choose whether you will live in stealth or openly as a trans woman. Both solutions present major challenges. If you live in stealth you are constantly looking over your shoulder. If you live in the open, you are never treated the same as a cis-woman. I live in stealth, and I find it ironic that before I decided to transition I had a secret that I kept from the world that I had gender dysphoria. After transition, I have a secret I keep from the world that I'm trans. So I traded one secret for another.
For me, it has all been worth it because life before was not worth living. However, for a person who is considering "transition" you need to realize that you will always be trans, will never feel "perfect" and you'll always know, and some others around you will know, that you are not a cis-woman. There is no easy road.
I am happy with the person that I am and love myself. Had I not transitioned and somehow survived to the age I am now, it's difficult for me to imagine genuinely feeling that way.