To me, Mormonism is about obedience, conformity, control, and structure. Some people thrive in high-structure environments. However, I think a lot of adults get past the need for that, which is why Mormonism will IMO only spread so far.
The two main categories of Mormons are the leadership (the narcissistic, boundary-ignoring types) and the herd (the rank and file people pleasers). Not being royalty or narcissistic enough for a position, I was trained to be a bootlick by the "leaders" and my family. I'm still trying to be less of a people pleaser.