In a new Kindle Singles interview, Star says the happy ending was in a way a betrayal of the series, reported People magazine.
Chris Noth played Mr Big while Sarah Jessica Parker portrayed the role of lead heroine Carrie.
"For me, in a way - and I didn't (write) those last episodes - if you're empowering other people to write and produce your show, you can't ... Say certain things.
"At a certain point, you've got to let them follow their vision. But I think the show ultimately betrayed what it was about, which was that women don't ultimately find happiness from marriage. Not that they can't."
"But the show initially was going off script from the romantic comedies that had come before it. That's what had made women so attached. At the end, it became a conventional romantic comedy. But unless you're there to write every episode, you're not going to get the ending you want.