I always thought of CDs and DVDs as an unpractical medium for storage and use, so I avoid using them as much as possible. They are fragile:
- you mustn't touch 50% of the object
- it can break or scratch very very easily
- to hot or to cold and it can break
- it's extremely voluminous (compared to hard drive, SD cards, etc)
I am glad I haven't spent money on anything like this because I probably would throw a freaking fit.