Ok so I got all this icloud stuff setup and started using my 4S for a few days. The contacts/cal sync stuff is cool but what is the point of photo stream?? Why do I need it to show up in my computer right away when I get home? For what? So I can see my pictures 10 seconds faster than plugging the phone onto the dock? What? I thought photo stream is going to be something that other people can see. But it's not. What is it actually used for??