Although you have to think that the PS3 is not just a games console it has other features.
I use it for my TV (Play TV) where you can pause and rewind live television, record different channels while watching another etc, use it for my Blu ray player and use it as a media centre for the music, pictures and videos on my PC.
Ok the game update thing is a little annoying but come on waiting for a few mins while additional features and bugs are sorted out in the game isnt really going to put you out now is it.. after all your going to be wasting hours playing a game???
Also the PS3 is sooo much quieter than the 360.