Do Mormons believe polygamy will be practiced in heaven?
Many do, because the doctrine is still part of official Mormon scripture (See Doctrine and Covenants Section 132). However, there will not be enough females in heaven for polygamy. Mormons believe that all children who die before the age of 8 are “automatic” heirs to the highest heaven. An analysis indicates that of the 70 billion people or so that have been born on earth, the gender ratio has been about 104 males to 100 females. An estimated 47% of males and 44% of females have died before age eight. That means 1.7 billion more males than females have so far made it to the highest heaven in Mormon theology.