I feel like this "everyone hates the prequels" stuff comes up randomly at least once a year. Given the fact that if everyone hated them, they wouldn't have continued to be gigantic successes at the box office after everyone hated the first one. <insert box office numbers doesn't mean anything to quality comment>
I think the vast majority of non-children disliked Jar Jar Binks and were mostly indifferent to Young Anakin and the Pod Racing and "oops" spaceship shit at the end of the first one. But the rest of the movie? Qui Gon Jin and Obi Wan Kenobi? All the special effects and shit that actually -were- pretty awesome? Darth goddamn Maul? There were elements in the movie that were a turn off, but I have never once regretted watching the thing. The same goes for both other movies. There was very cool shit in each one, but none of them were oscar worthy minus special effects/music. Just like the original trilogy. The shoe-horned romance was bad, but no worse than tons of other action movies that didn't need a shitty romance subplot. The action sequences were genuinely good in every film, even if you take into account "I have the high ground."
Anakin wasn't a likeable character, and because of the tie-in shit that was planned, wasn't fully fleshed out in the films. The characters around him (minus notable lines from Padme) were pretty awesome throughout, much like the original series and Luke. Luke had a lot of whiny, cringeworthy antics, but Han Solo being a boss made up for it.
The prequels weren't amazing pieces of film by any stretch of the imagination when taken as a whole, but the only people that honestly -hate- them are basement dwelling neckbeards. They were alright to ok, just not as groundbreaking as the original trilogy. Not to mention, the original trilogy didn't have youthful nostalgia to go up against when it comes to opinions. I'm not sure if too many people were watching Star Wars when it first came out going "what's this crap? This Island Earth was waaaaay better!"