only a few ps3 games are actually using the blu ray's insane storage amount, and if it did take 30 mins to install it, whoopie, it saves the laser. The first time you guys have to pay for a repair, you'll remember this thread.
MGS is one of the few exceptions here, as it is obviously ginormous with it's cool movies and all. That being said, once it was all installed, there would be no major load times ever again. Right now, correct me if I'm wrong but if you load up an old save, it has to copy everything on tht level to the HD again. Load up another save, and it installs that level and so on. Thats more of a pita to me.
installs from the HD would obviously be optional, as it is on the 360. You don't want to use it, no problem
But, faster load times (the blu ray is slow), quieter system operation, less heat from drive not spinning, and no laser constantly in use are all GOOD things. Can't see why anyone would not want to use it. First thing I do with my xbox now is install game to hd. Yes the xbox games are smaller , but so are the hard drives. We can stick whatever we want in the playstation so hd space is a non issue really.
I don't think we will ever see an option to install a game to hd and not require the disc to be in the drive. You could rent games and just install them and never need the game disc again.
as for the laser being reliable....look around, they aren't on either system. Gone through two on my xbox's, and now two on my ps3, and the sony forums are full of laser issues. Games nowadays stress the laser far more then previous consoles at faster speeds and more data being transfered and streamed.
Like I said, wait until you lose a laser....then lets talk.