Why would you run video through a processor?

On screen menu's, internal HQ video scaler, convenience, ease of wires in walls, no noted signal degration....do I need to go on?
I am a purist and run direct wires but I can see why some circumstances other options would be better.

I didnt miss any point as the OP was talking about the picture and nothing more. Besides you could still go straight to monitor for video and use multi channel RCA connections if player has internal decoder for advanaced audio.........like I said, no point was missed just trying to keep it "to the point".