Its basically what happenedBy the way, just came across this. Lucas' plan for luke
"He ended up secluding himself in this Jedi temple on a new planet, and he's just there meditating, reassessing his whole life. Gradually, over the arc of the movie, he rediscovers his vitality and comes back to himself.""
Exactly what everyone seems to have wanted, but instead he basically committed suicide, robbing the good guys of much needed assistance