And yet Mormonism appears to be proceeding forward unhindered by the supposed impediment of its past (and, admittedly, probable future) embrace of plural marriage.
Certainly one of the reasons the Church proceeds forward is because is abandoned the impediment. Clearly the Church was on the verge of destruction and was not prospering at all in the late 19th century, primarily because of polygamy. And it took 50 years after the second manifesto before the Church really started to be remotely accepted. And even today the black mark is there. Look how quickly the Church is tagged to the FLDS.
As for the future I think you are simply fantasizing. The Church will never ever bring polygamy back as a real life practice. The LDS Church is more anti Polygamy than any group out there and I believe current leaders wished it never happened. If they institute it in the near future it would mean huge losses in membership and growth. Just not gonna happen.
I think the principles and doctrines at the root of plural marriage are undoubtedly the “acid test” for many people. It is what separated the “sheep from the goats” (as it were) in Nauvoo. People like William Law, his brother Wilson, William Marks, etc., could not come to grips with the “principle,” whereas Brigham Young, John Taylor, the Pratts, etc. could and did.
Would you feel the same way were you looking at this for say a David Koresh type?
And the body of the Church was not negatively affected by the defections in Nauvoo, just as it was not hampered by the previous periods of defection in Far West and Kirtland. If anything, history shows that these periods of intense apostate activity in the Church are always followed by a corresponding growth spurt that more than compensates for losses to apostasy – almost like an apple tree that, after being severely pruned, rebounds with more and better fruit the following season.
Really this is nonsensical and is an argument made to make you feel good about losing massive numbers. Rarely is it good to lose souls in a religion.
I have found the concepts contained in Joseph Smith’s letter to Nancy Rigdon to be a very reliable sifter of the Saints. Those who take offense at it will, if they have not already, eventually fall away. Those who view it as an expression of the mind of God will always remain faithful.
Some of the concepts in the letter are fine. However, they really lay the groundwork for the one claiming to speak for God to have excessive power that could be abused. If God really does change so easily as the letter proposes then we better be sure the person speaking for God really is speaking for God. Unfortunately the letter really appears to be more abusive then godly.