Well software Patents I will agree with you, they suck big time, that is why our and many other governments do not enforce or acknowledge them.
Design patents (When done right) and Hardware patents have a reason and work.
Software patents in my mind would be the same as patenting novels, music or math. < they should fall under copyright only.
Hardware patents is a must. They where created in order so that people are encouraged to share idea's without the fear of losing income in doing so. Think of a mill that find a cheap way to grind. Takes out a patent with a limited time where it can make a profit and after said time the knowledge can be used by everyone.
Design Patents is so that someone does not try and fool you into thinking that its something that its not. Think fakes. In this case I do not think seeing a fake page turn will make me think I am using an Apple device so on its own I would say it should not exist, but if someone release an fake iBook application on Google play saying its from Apples with same page turn look, then Apple has my blessing to go after them like a bat out of hell.