RoadtoHana,
But there are more than two possibilities here. You've listed:
1) God isn't real
2) God is real, and Joseph Smith was his prophet
but you've left out:
3) God is real, but Joseph Smith wasn't a prophet
Assuming there are only the two propositions you've listed is a false dichotomy.
No, what I listed is exactly true. When you delve into the doctrines involved, there is simply no comparison between the Mormon Church and any other denomination, especially so called "christian" faiths. If Jesus was the Christ, and he was, then the Mormon Church is obviously His Church.
Pick and issue: Authority, Baptism, Sacrament, Temples, The Fall of Adam, The Atonement of Christ...etc...etc... Modern revelation brings clarity and understanding to all of these teachings and goes further than just listing them as teachings, it explains
why they are taught and/or why they are necessary.
We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light. - Plato