I asked a questions relating to Swift and sprite-Kit : ["removeAllChildren vs. issuing 'removeFromParent' for all nodes in self.children?"](https://stackoverflow.com/questions/36240996/removeallchildren-vs-issuing-removefromparent-for-all-nodes-in-self-children) which was downvoted for some reason and then removed.

Can anyone explain why? It was a perfectly reasonable question asking why a respected tutorial had used a loop when a simple command was available to achieve the same thing and I wondered if there was some subtlety I was missing.