Here is a link to short shunning experiences of Jehovah's Witnesses. It is heartbreaking to read how people are abandoned for decades by their family for not wanting to be part of the religion. They never truly get over the pain. Jehovah's Witnesses say it is loving, because unless the child returns to following Watchtower doctrine, they will not survive Armageddon. Yet they have been saying that for over 100 years, and generations of families have died shunning family without the arrival of Armageddon. Whilst JWs say this is loving, they will say it is heartless for Mormons, Amish and Christadelphians for doing the same, since each of those religions are false and part of Satan's system.
Notice how each of these religions have a similar message, yet their children are indoctrinated to believe it that they are somehow uniquely acceptable to God. This is why I think the concept of a single true religion is dangerous.