No, Toobs, the point of multiple DVRs and double-recording is not to watch a lot of TV; it is to ensure that you get to watch what you want to. I can lose an entire season of Fringe due to a bad HDD, but oh, look...there's a backup copy of every ep sitting right next to it on another DVR.
I can Scroll thru Pages of Recordings and Select Whatever I Am In The Mood For!!!
It does thought require constant Maintenance to Delete Recordings that you thought you might watch but now you have decided it is no longer important.