Compact Discs are very unrealiable and they get scratched easily. It seems that manufacturers are not aware of this because they will keep using the crappy format. They are developing blu-ray and HD-DVD, again using discs! At least blu-rays will also be offered in a cartridge, but still.
Besides that, CD's are very big, unhandy, noisy and take long to insert in a CD-ROM drive.
I recently imaged my entire CD-ROM collection to my hard disks and multiple CD's were unreadable. Even 2 official discs, not burned myself!
I have lost some important software due to CD failure. Unreadable. CRC errors... I never lost any data because of HDD failure. It happend twice, but I always had time to backup. At least HDD's mostly die slowly.
TheMajorMMX - Intel P200 MMX @ 225Mhz - V-Tech (PcPartner) Baby-AT mb w/ Intel Triton TX chipset - Nvidia Riva TNT2 M64 w/ 16MB - 256MB M-Tec SDRAM - Still running.....