Yeah but they're Jedi Knights. Knights fight. They gallivant around the Galaxy defeating evil wherever they find it. They don't sit in one place and meditate for decades, unless they're being hunted by an Empire and the Galaxy turns against them. That's why I find Luke's thirty year absence from galactic affairs to be horribly selfish. The Jedi Knights are the guardians of peace and justice. How much has Luke really done in the name of peace and justice while he's been hiding out on Ach-To and wherever he was before that? The core of the Jedi beliefs is their compunction to serve others. Wasting your talents and time meditating in the remote wastes when there are people out there can use your help is selfish. As Obi-Wan said: "You are thinking about yourself when you need to be thinking about your service." The most admirable thing the Jedi did in FOTJ was help liberate slaves across the Outer Rim. They saw a cry for liberation and justice and they stepped up to help.