I'm putting this article under Protagonism even though it only exists because I raise this point in my critique of Star Wars, since it's a moral analysis rather than a storytelling critique. Amyway, here's why the Jedi are far from the perfect heroes they're portrayed to be, and arguably even more bad than good:
The Jedi support a government, nuff said.
The Jedi forbid revenge (ironic since they support a government, and all governemnts take revenge).
The Jedi order's spirituality revolves around the suppression of emotion. This is a horrible thing. Emotions are a beautiful part of human nature, and while it's true they can be a source of temptation, they can also be a source of motivation. Anger, shame, sympathy (come on yes it's an emotion), and many others can inspire a person to stick one's neck out to inflict deserved retribution, seek self-improvement, or help the innocent. Even if you don't believe in retribution, anger can still help ward off fear. Besides that, suppressing emotions is simply a hopeless endeavor. Human beings are inherently emotional creatures and you can't change it.
The Jedi have a chain of command. There's simply no reason for this, ever.
The Jedi forbid romance. This stems from their suspicion of emotion, and so, my same argument applies. There's no reason a Protagonist mage warrior would be forbid from partaking in reproduction.