Mormonism has only been around 150 years. We haven't seen yet if it will stand the test of time.
It's already one of the largest growing religions in the world.
If it's still around in 2,000 years, then it will join Buddhism, Christianity, Judaism, Daoism as a world religion that had something intangible about it that gave it lasting power and appeal.
Ahhh, there's that special pleading again. Nothing can be learned from anything until it meets Cypress' version of what is "important".