The PT movies actually made me appreciate the story of the O-OT 4-6 now cause it shows how a story can get lost if you don't plan beforehand. The O-OT was not planned beforehand and it still works well as a story of The rebels vs empire as you follow Luke, Leia, and Han for 3 movies and then there is a subplot with Vaders redemption at the end of ROTJ to give it more depth then your average fantasy movie.
As I said, I want to watch the OT films, I love to watch the OT films, I felt obligated to watch the PT films when I was still in my faze of wanting 1-6 to work, and it took me to finally realize if you are forcing yourself to watch a movie because it is part of the story, then Lucas failed with the PT movies.