The Book of Mormon insists that the calamities and warnings it describes are for our day. Moroni is frank, “Jesus Christ hath shown you unto me, and I know your doing” (Mormon 8:35). It is a "handbook for survival in our day." This article, written by Maurine Proctor, describes several Book of Mormon personalities whose philosophies led to the destruction of both the Jaredite and Nephite nations.
"The Book of Mormon describes to us the prosperity and happiness of people who are united under righteous leaders, but oh, do we also see grinding wars, clashing philosophies, egos inflated by megalomania, secret acts below the radar and ultimately the utter dissolution of a people who were promised so much more if they could have been faithful."