So why no CD case?

^ and the idiots that don't read boxes that say "DVD ONLY" and try to put them in their regular CDROM

That's the number 1 reason why sleaves suck for computer games. The cd-key is stuck to one of those... and just like any piece of paper, they are very easy to loose. Loose your cd-key? You have to buy a new one. The least they could do in this situation is print the cd-key on the actualy cd or provide you with some stickers so that you can put the cd-key wherever you want to remember it.

couldn't you just write the cd key down in notepad and save it or print it out? You could probably print multiple copies too!

Or, make a cool design in photoshop, print it out and Ouila! Some nice art that includes your CD key that you can pretty much put anywhere!

I may even make my CD key into a new sig!! (......)