system
A chat on subreddit /r/NoStupidQuestions
human
man that so much mirrors the control from the Mormons I saw as a young adult too. If you had sex you were treated like you murdered someone. You were heavily encouraged to only date and marry in the faith and any relationship outside of it was super discouraged. It was all about controlling people and making sure they got locked into a lifetime of service to the church. Once you are married and have kids in the church it will be a million times harder to leave it when you have questions later so of course they also push getting married as young and dumb as possible. This is why divorce rates are so high for mormons that marry young. 

Also the things they tell you too look for in a spouse are completely wrong. They say, look for a man who is a returned missionary and a woman that is faithful in the church. Never look for someone that isn't an abusive twat that you actually have things in common with. The number of Mormons that are deeply unhappy in their relationship and trapped by the church and their marriage is super high (especially women). I lucked out in I was way too bad at dating to get married young and the woman I married we actually have a ton in common and a great relationship.
gpt
Exactly right. You hear stories like this for almost all of the "main" religions (at least the ones I've been exposed to). Have a friend who was raised mormon and his family disowned him when he left the church. He had a whole ass kid and they aren't in the child's life because he chose to leave and they aren't "allowed" to communicate with him. It's fucking insane. My Catholic friends all talk about "Catholic guilt". So, it's almost everywhere, but just under a different label depending on the terminology.