I have almost 400 apps in iTunes, which is taking up a lot of space. Before the App Store you had to add apps to your iPad/iPhone via iTunes, but is there any reason to keep apps in iTunes these days? It seems that besides discontinued apps, everything else can just be downloaded whenever you need it, which is normally only when you get a new device every few years. Am I missing something, or should I go ahead and delete all of the apps all from iTunes?