User blog comment:DancePowderer/The New Aquarius/@comment-4493594-20111219073612

Luffy: Screw enlightenment! I'm just here to kick ass and have fun. Sanji, Meeeaaat!

While the Poneglyph may be about enlightenment and stuff our hero is still Monkey D(umbass) Luffy, a guy who doesn't give a crap about anything too complicated and is able to defy all odds against him to do whatever he feels like doing. Who cares about enlightenment if your crew is about to get killed by shitty Teach and his thugs?

Luffy represents the path of constant learning. Enlightenment would mean death for that guy.