User blog comment:Keekian/Will OP be better if Luffy was smarter?/@comment-1784001-20170417160024/@comment-203.177.104.66-20170417172229

The novelty of him acting like a complete imbecile in the series makes the storyline comedic. If you start from the beginning of one piece, it is not brutal or more serious than any other animes. It is also solely to children. Maybe you are fun with mature content animes.

With regards that you don't find it amusing due to his carelessness, we can say that the author (oda) has just made it. Luffy wont die just with it.

Being better of luffy, you can define him when he would protect his nakama and would lay his life on it because his nakama is all that he is left to protect.

Just enjoy the movie guys. Watch like a child.