Then, as I looked at my flatscreen iMac I had my epiphany. There's nothing about the interface of that computer you don't need. All that matters is the screen, the keyboard and (occasionally) the optical drive. Since you don't need the CD drive exposed constantly, you move the screen out of the way when you need to access it. Sweet idea.
Then it hit me: optical disk-drives will go. Think about this piece of tech:
Instead of placing a disk in the drive we'll have a small, flat box with a cheap, short-range wi-fi transmitter in it. It'll probably be completely solid state, not optical or magnetic. You take the thing within range of your computer and the computer automagically mounts the disk just like a CD. No more need for truly 'removable' media.
This is a far future thing (and how you power the drive is a problem) but I'm willing to be we'll see this in the next...10? 20?...years.