As someone that believed what he read on GAF about how hassle-free gaming on PC has become and spend 1200 EUR to build a gaming PC, I have to disagree with you.Configuration? Install Windows 7, install latest graphics drivers (or let Steam do it for you). Speaking of Steam, it will also take care of your game updates for you. In the same way.
My PS3 with PS+ trumps my gaming PC so hard it's almost laughable that people suggest Steam is a valid alternative for the majority.