Because he probably still wants a media player in the living room when his wife wants to watch DVDs, BDs, PSN downloads, etc. for times when he'd rather play PS3 games in the den.
I haven't tried this, but you might actually be able to transfer a hard drive backup of your current console (from an external drive) to your additional console, although it would probably still require authentification for all your PSN purchases.
It might not work if the PS3 ties each backup to individual console IDs (very likely).







