I think with the prequel trilogy, the started on the wrong foot, and went rapidly downhill with each installment, with the later two being even more unwatchable than Episode I. At least in TPM there was the nostalgia of the time when it came out, the hype, and the ultimate disappointment many fans felt with the film. I honestly don't know why the other two exist other than make money and Lucas' need to complete the new trilogy. The fact that Episode I is the best the PT ever got...that's pretty sad.