War is the greatest plague that can afflict humanity, it destroys religion, it destroys states, it destroys families. Any scourge is preferable to it. ↗
I also don't have organized religion on Pern. I figured - since there were four holy wars going on at the time of writing - that religion was one problem Pern didn't need. ↗
We must respect the other fellow's religion, but only in the sense and to the extent that we respect his theory that his wife is beautiful and his children smart. ↗
The restriction of religion to private life therefore does not necessarily threaten the vital interests of the majority religion, if there is one, and it protects minority religions from tyranny of the majority. ↗