I "STRONGLY" recommend that anyone who wishes to at least understand how the midi-chlorians were in the story of Star Wars are meant to be viewed as intended by Lucas, please read this page from Wookieepedia explaining them.
http://starwars.wikia.com/wiki/Midi-chlorian
No, I'm serious here. Read it. I know many didn't like how midi-chlorians were introduced in Star Wars, but that was mostly because Lucas did a crappy job of having them explained in Phantom Menance.
Midi-chlorians did not create or produce the Force what so ever. They're basically organisms that were symbiont which allowed it's host to sense the Force, which was it's own seperate entity. The more midi-chlorians someone had in their cells, the greater ability they had at sensing the Force to use it.
Also, the idea of making the Force just like magic itself was hated a lot by many fans of the franchise. And by fans, I'm talking about fans who read the comics, novels, watched the tv shows, and played the video games than just only watching the movies. Between "Return of the Jedi" and "The Phantom Menance," the franchise had their comics and novels go in that direction of making the Force as magical as possible. And what we got was Star Wars devolving into something of a Lord of the Rings/Magic the Gathering/Harry Potter/Dungeon and Dragons rip-off. Many people didn't like the direction of Star Wars having "spells" and stuff that made it look like more an medieval fantasy than a sci-fi adventure. Of course, many fans of Star Wars who only watched the movies missed out.
In the end though, people should not make a big deal about midi-chlorians. What made the prequels not as great as the orginal trilogy, was the fact that Lucas isn't much a great director. A great visionary, creator, and producer, but not a good director. He probably should of gotten a better actor for Anakin in Episode II and III, and should of done a better job with Jar Jar Bink's personality and speech, but it's his lack of good directing skills that did the harm to the films. From what I understood about when they filmed scenes for the movie, whenever Lucas saw the actors perform a take as good as he thought he'd get for the scene, he simply told them to stop and they'd use that take. He should of had the actors done more takes of the scenes, then hopefully choose which ever was the best take.
However, I actually did like the prequels. Even with their faults, they're decent. If you don't like them, that's fine. But seriously, enough of the anger about midi-chlorians.
