[citation][nom]hillarymakesmecry[/nom]Blu-Ray is going to be totally irrelevant once flash memory prices fall low enough. I'd say in 2-3 years flash will be so cheap Blu Ray will already be outdated.[/citation]
Also agreed. Optical disks have been around since 1978; Over 30 years. The only technology I can think of that's been milked harder is the internal combustion engine.
That said, there are still a few benefits that optical disks can offer that flash memory cannot. They are waterproof, dirt-proof (can be washed), and when the massive EMP hits in 2012, they will be impervious to the magnetic energy whereas flash memory will be wiped.
Silly as that sounds, I do backup my photos to DVD occasionally and stash them in a fire box. Peace of mind.