There are definitely some interesting positive cultural influences from the Mormon church. There are some negative influences however. A few years ago, I decided no longer to participate in the Mormon church because of its harsh policies/teachings about LGBT people and because I found myself agreeing with agnostic atheism. I told my family and friends that I'd always respect them and their beliefs when I decided to leave the church. I was surprised by the harsh reaction: my Mormon loved ones told me that they were concerned about the future of my children, that I was depriving my family of happiness in heaven, and, as one of my own parents told me, they didn't know who I was anymore.
I think Mormons are extremely kind to non-members of the church and to the church's current members. But if you are a member and you want to leave, sometimes they can be extremely harsh. I also think Mormons are some of the most kind people in the world on the person-to-person scale, but on the group-to-group scale, they can be pretty brutal sometimes. Blacks were denied access to the most sacred temple rituals until 1978, and today LGBT people in long-term relationships or marriages are considered apostates and their children are not allowed to be baptized. Weird mix of super kind and super harsh.