To begin, I love the Mormon people. They have always been extremely friendly, caring, and I have no doubt their love stems directly from God. Growing up, I remember we had neighbors who had just moved from Salt Lake City. They were lovely people -- immediately invited my family over and we all became great friends. Their daughters were best friends with my sisters.
Despite all these things, what they believe does go against Christian doctrine. Their believe in Christ's origin, in Christ Himself, and even reaching a god-status does go against the gospel.
As much as I love the Mormons, I really do, they aren't of Christianity.