For what it’s worth, our Primary decided that they want us to sing Families Can Be Together Forever as the opening hymn on the day we present the Primary program. And so sing it we will, as it is contained in the hymnal.
When I was going through my divorce, I remember leading this song. And I realized, standing before my fellow sisters in Relief Society, that at least a few of them were wondering how I would take this song. As I do believe that Families can be Together Forever (even if mine was in flaming ruins) and that my family has done so much good (despite the occasional evil), I embraced the song and sang with vigor. So no one got to watch a sister melt into a weeping blob of pain that day.
One might say my update is PC, but again note that the list of across the Church does not include Families can be Together Forever, even though the theme this year is Families Are Forever. If that isn’t tantamount to an official repudiation of the song in its current form, I don’t know what they could do, short of recalling all hymnals.
We should use judgement with this song.
Families can be together forever might not sound appealing to someone having bad or dysfunctional family problems.