But the underlying reason for the RC bishops and clergy to remain childless had to do with property and inheritance rights (on several levels). A priest with children would divert Church funds for their support - what other job would he have to support them? - and the children of a high level official could make claims against Church property.
Also the clergy was one of the places the younger sons of nobility were put - as a priest, they wouldn't be as much of a threat to their older brothers.
It is unlikely a society could survive with a non-procreating nobility. A more likely scenario is that the parents are charged with teaching their children about sex but Kal never had that opportunity. Chances are Za will inherit Kal's property as his wife, whether or not she has children by him so she doesn't care, and nobody else is going to take the responsibility for clueing Kal in.
