Sometime's you have toi burn a coaster to prove a point. For instance, I have to turn off SMART-Burn in order to attempt burning some Princo 48x CD-Rs at 48x, otherwise it only let's me burn them at 40x (and even when attempting 40x the speed usually drops to 32x!!), but I needed to prove a point to some retail outlets so that they would take the hint about their media, so I disabled SMART-Burn for that. Some people also like testing to see how much a difference it really makes too.
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R
The Progression of Computer Media