Forgive me if this has been discussed, I swear I searched for it. Just curious... does anyone think that blu rays and all optical discs will be completely replaced someday soon by sd cards? They are so small, so sturdy, why not have a store full of movies rented on them instead of discs? You would save room on storage and could carry them around easier. Do movies play better off of blu rays then cards for some reason? Better access time or what?