We get to experience "the aura, athleticism and martial arts skills" of the Jedi at the height of their power. For dark side fans, "Revenge of the Sith" is dark as hell—way darker than "The Empire Strikes Back." We finally got to see the Clone Wars. There's some good stuff here!
But the prequels introduced so much stupidity into the canon, like the weird virgin birth of the "Chosen One," the Balance of the Force and the ridiculous midichlorians. Can't we all just pretend they don't exist?
"The Force Awakens" barely acknowledged the prequels—choosing instead to focus on the legacy of the original trilogy. Let's make like J.J. Abrams, and act as though George Lucas's destruction of his legacy didn't happen.
Other fans make a strong case for why—even if you loathe the prequels—you can't just disregard them.