The OP’s praise for the Mormon Church is disturbing.
First I want to say, the LDS Church is a pagan organization. Not only does it not reflect the Apostolic Faith, it does not even reflect the Christian Faith.
Hence, it is inappropriate for us as Catholic Christians to praise the growth of the LDS Church.
Mormons are not Christians because they believe that we are not creations of God, but merely intelligences being formed by him into Gods like him, just as he was formed from a base intelligence by a God before him in an infinite regression.
Christians, Jews, and Muslims believe that we are all creations of God from nothing. We are not co-eternal with him. We are not Gods in embryo. However, Christians do believe that the Eternal God became one of his creations in order to imbue us with his divine nature and cause us to become gods after a fashion, but not Gods like him.
Hence, Mormonism is a pagan religion, because it acknowledges that deities are contained within the whole of the system, whereas Christians, Jews, and Muslims all believe that God has created the universe and everything about it from nothing. This fundamental misunderstanding of the nature of God renders their baptism invalid.
For this reason, Mormonism fails to be a Christian religion.
Mormonism also claims to be a Christian religion, just like Unitarian Universalism. Neither are, but out of politeness and recognition of the fact that they are loosely based upon Christianity, it is appropriate to acknowledge that they can be classified as a Christian Faith. Much like Mormons stating that the RLDS, the FLDS, and the Rigdonites are not Mormons, but they could be called “Mormons” after a fashion.
That said, I have many Mormon friends. I am taking a class at the LDS Institute of Religion at my University (free parking. w00t!), and today I went around to all the campus ministries from various faiths with the President of the LDS Student Association (a good friend of mine, has been for seven years), inviting them to participate in an interfaith canned food drive.
I have many LDS friends, and I am very fond of them all. They are very good, pious, and holy in many ways. They embrace human life and many other Christian values. These are good things.
These things could also result in the salvation of many LDS.
While Mormonism seems like a big player to me, because it’s very prevalent in my white, middle-class circle here in the Southwest of the United States - it’s a very small religion worldwide. They’re infidels, for sure, not even apostates, heretics, schismatics, or dissenters. But they’re at the bottom of my list of problems with the world.
Kind, decent people who focus on their families are needed in this world. And while I don’t want there to be more people holding to the Mormon religion, I’m always happy to have more pious, holy, scripture reading, prayerful, intelligent, and Christ-like people on this earth. The LDS church does produce a lot of them.
The fact is, relativism and secularism are the two demons plaguing Western Civilization right now. The LDS can be our allies in this battle.