You probably read all the way to the end of the series by now, but...later on, it was revealed that the people of this era have different values. The kids probably would have ended up agreeing and being happy with their dad's decision when they eventually grow up. We modern people will probably never understand and think it's stupid, but that's supposedly how people's mindset were like back then. Or at least, according to the author.I get it warrior code and all that bollocks, but he's making his kids fatherless and his wife husbandless all due to this bravado.