The hipster's of tech, never mind your data backups...
Do they think Hard Drives and USB sticks are now reliable enough to replace optical storage?
I've known people to lose hard drives then while transferring to the replacement lose the back up drive too before the transfer was complete. I've also had friends say if not for the CD/DVD back ups on some things they'd have lost everything. Yeah, even in 2012.
If Apple is looking to discontinue optical drives on their products, it seems to me they're a bit cavalier about their customer's personal data storage and backup. Either that or they're trying to hard to be the techno-hipster about how their technology looks at the expense of your data storage.