User blog comment:Samium/Nico Robin, human in a world of characters (Essay)/@comment-94.15.13.40-20170108084851

In a world full of people who can turn to magma, light and electricity we have our protagonist made of rubber. Luffy is a representation of enough desire, hard work and determination can find a path and take you anywhere, so no matter your starting point you can achieve great things.

Luffy does have a child like simplicity, thats the point. In a world where slavery, condeming of islands and racism is accepted by 'adults' Luffy's child like simplicity states right and wrong, that's all he sees and so stands up to 'bullies'.

With Robin, a bounty has been placed on a little girl's head and none of the mature characters you have spoke about would go out of their way to help because they all have their own desires and goals, much like the real world. However, Luffy's character shows that you can achieve/aim for your dreams whilst helping those around you.

Obviousy One Piece, much like anything you read, is down to interpretation but I don't interpret it the same way as you. Robin was persecuted by the world and the only person willing to stand up for her  and make her admit she wants to live is a charcter with the simplistic ability to see right and wrong reagardless of who makes the rules.