Nah I’m pretty sure it’s the same reason why Hannah Montana and Miley Cyrus are never seen in a room together

Cool so I can come in to your house and steal all your shit, beat up your children, and shoot your dog, and you aren’t allowed to fight back because if it was justified, you wouldn’t need to?

EDIT: I seem to have misinterpreted the comment, as you appear to be referring to conscription being unnecessary rather than the fighting. Taking the whole context of the comment supports that, but taking only the context of the final sentence makes it appear that you are saying “if fighting is justified you dont need to fight” rather than “if fighting is justified, conscription is unnecessary”