A Hungarian movie critic said for the Phantom Menace critic:
story-writing has some easy rules. One of them is that if the heroes get into trouble by clumsiness and they have to overcome these problems with hard work is good story-writing. If you come out of a bad situation because of it is cheating, and Jar-Jar breaks this rule so bad that it shatters the viewer's sense of reality.
This is why the Phantom Menace is hated by most people, and though in the following movies Jar-Jar had less and less appearances(luckily) it is still unbelievable that he could get that far.
Oh, and he is the sole cause for the empire to be born...
Also though George Lucas himself said that "Special Effects are just tools to tell a great story" by the prequel trilogy he threw all this away making some scenes comically funny because of bad CGI.
Many plot-holes comes from the prequel trilogy, not to mention it destroyes for newer viewer the BIGGEST TWIST EVER, that Darth Vader is Luke's father.
Another problem in my opinion is that other than Palpatine, all the other villains are underdeveloped. If we don't count just the movies(since when they came out there was no Clone Wars series) all we knew about Dooku is that he is a sith and therefore an enemy. We had no idea of his motives, why he did what and what he was representing. And grievous was a droid who could caught a cold somehow.(he most possibly downloaded a virus lol
)
Other than that many things didn't made sense, there were too many cheesy dialogue between Padme and Anakin and their whole romance was not reconcilable with their other character traits.
Also there are lots of talks between characters about tales and stories which sound MUCH better than the story we actually watching. Like Palpatine's rise as a Sith, the events in the clone wars like when obi mentions Kato-Neimodia
that thing on kato-neimodia. It doesn't count
WHAT HAPPENED THERE? HOW DID ANAKIN SAVED HIM THERE? heck if I know, never answered.
An another problem is that you should feel sorry for Anakin in the end, being consumed by the dark side, his wife died, he has nobody left... except...
Obi-wan's disappointment in him felt much sadder and painful for me.
And there are many many maaaany other reasons I think the prequels are MUCH worse than the prequels.
Oh, and this what a bunch of nerds made as a message for J.J. before the Force Awakens came out: