People who identify themselves as coming from the "traditional" Bible based or historical Christianity exclude any other belief that does not conform to their own. This is peculiar because there are thousands of such denominations that have fundamental theological differences and yet they are part of the accepted Christian grouping.
Latter-day Saints are excluded based on one or more of the following reasons:
1. We do not adhere to the Nicene Creed. This creed is incomprehensible to me. It is interpreted as meaning that there is a Trinity in which God the Father, Jesus Christ, and the Holy Ghost are the same being. Most Catholics and most Protestants feel that acceptance of this 325 AD politically motivated statement is a true test of one's Christianity.
2. We believe that God the Father has an exalted body. This is blasphemy to the self proclaimed Christians. It should be an honor to acknowledge God as our literal spiritual father and we want to be like Him.
3. We believe that in addition to the Bible God spoke to prophets at other times and in other places. One such record is God's dealings with people on the American continent from 2000 BC to 400 AD. This record is called the Book of Mormon, Another testament of Jesus Christ.
4. We believe in continuing revelation from God. The self proclaimed Christians do not accept this belief. An extension of continuing revelation is that there is a living Prophet to guide us today and that authority to act in God's name is required to carry out his ordinances.
My wish is that the ancient admonition "by their fruits you shall know them" be applied to all beliefs.