Second, it wasn't optional for people, like me, who bought a PS3 after the update. Since I bought a console with the restriction, I don't remember exactly whether people could refuse the update. But your points, about not being able to play future games or playing online are also arbitrary restrictions which, while not outright preventing you from refusing the update, are designed to arbitrarily handicap you to the point that not updating is more of a hindrance than not.