I see a lot of folks saying they are disappointed that continues to use Optical drives. My question is why? What happens when you can only get a program you want on an optical drive (DVD or CD). How about doing personal file backups on optical like itunes or iphoto backups? What do you use to do your backups if you don't have an optical drive? This is a serious question, I don't know of a viable alternative and need educating, or at least other options.