With how often I use the CDROM drive in a laptop, I wouldn't mind if they went away completely. I think my next personal laptop will not have such low-density storage built in but only as an external device. That freed space could be used for other stuff such as more battery or even to reduce the overall bulk of the machine.
Makes something like the MacBook Air a tempting choice for the future: 2010 is the year when I will replace my personal laptop.
(Katie would disagree: She uses her laptop as a personal DVD player)