Except that if you are just starting, meter calibration is overwhelming and I would not want anyone to think otherwise. Need lots of time/resources/trial & error. I know because i have just spent the last 2 months getting there.
Disk by eye calibration gives you the basics at least : Brightness/Contrast/Color/Tint. Those by themselves are daunting when one is just starting - especially when you start looking at Grayscale Ramps/Steps for banding/color tints.
Basic by eye calibration leads on to proper calibration if one is so inclined. With my previous F8000 i never felt the need. With my Q9FN it's definately requited to get the best out of this TV. But, it's painful.