I actually liked the prequels. They had their faults of course, including jar jar and Hayden's acting, but they stayed true to the Star Wars universe that Lucas created and that we all love. Also had some incredible characters/acting, scenes and moments and an overall solid plot structure and flow.
The sequel trilogy was so incredibly bad and forgettable. I watched all 3 in theatres and right now can't think off the top of my head any single memorable/good scenes. A lot of forced awkward comedy, poor acting, and maybe the absolute worst plots I can ever recall in a series of movies (nice job disney scrapping Lucas' outline and hiring multiple terrible directors/writers). The force awakens was the best of the 3 and even that was largely a rip off of the original Star Wars. Was cool to see some of the original characters back on the big screen but that was the extent of the positives.
Of course the originals are the best but the prequels fit within the universe. The sequels were like the "American Pie Presents" movies -- licensed the star wars name and some of the IP within the universe but just blatantly not the real thing.