I'm not a believing Mormon, but Ted my favorite religion. I have three main things I really love about it.
The first is the sexual/familial nature of God and creation. God the Father has a wife and all the souls are his spirit children produced through a sort of spiritual sex with his wives. (it's not clear, but my understanding is that the children of each wife are the inhabitants of a different world). Furthermore, the point of all human life is to spiritually grow to where one ascends to godhead and creates their own universe.
To me, this perfectly matches nature. Life exists to produce more life, and the quantity of life multiplies. Life also forms order out of disorderly matter and gives it purpose. Mormonism gives purpose to every human life in a way that reflects natures own patterns. I also find the whole concept of God as a father to be much more personal.
Two, Mormonism answers every major question about the nature of God in a simple way. The Trinity are three separate beings (no BS) and they only really worship one. God is physical. It's simple to understand.
Three, Mormonism has the most just take on the afterlife I've ever heard from an organized religion. The sinners and heathens suffer a sort of extended time out, but they then go on to heaven. Heaven is tiered to where all levels are good, but better people have a better existence. I think one missionary said that Joseph Smith put it like this: if a person could see how good even the Telestial Kingdom is, they'd kill themselves to try to get there sooner. And a person in the Telestial Kingdom would feel the same about the Terrestrial Kingdom, and so on.