Why do You dislike the Prequels so much?

Which prequels?

If you mean the Star Wars prequels, it's because they are terribly written, terribly plotted, terribly acted movies. None of that kills a movie for me - some of my favourite movies have those qualities. But the Star Wars prequels had essentially unlimited budget and talent at their disposal. They SHOULD have been great movies, and they're just the exact opposite of that. As for why exactly... go watch the Red Letter Media reviews, possibly the most devastating piece of film criticism ever produced. To that point, anyway.

If you mean the Hobbit movies, their issue is that they are so needlessly padded out. Hell, I get that the studio wanted a trilogy, but even then - why have a trilogy of three hour movies? Cut the extraneous crap and make them 100-120 minutes each.

Hmmm, other prequels... The Thing? I quite liked that one, except that dammit, why go to all the trouble of reproducing the original Norwegian camp events if you're going to ignore the fact that they blew up the ship excavating it with bombs, and stick that silly explosion ending on? Bleargh.

Can't think of any other prequels you might mean.