I did not leave Mormonism. I resigned my membership in the LDS Church. Given the current emphasis by the LDS President on removing the word “Mormon” from the vernacular, I would say the LDS Church has left Mormonism.
Although it’s been six years since I resigned, I still believe the majority of what I believed before I had my name removed from the records. I’ve read reports of many folks who have left the church over the years. Some expressed they felt betrayed by the leadership. I don’t feel that way.