I like Luffy as a charecter very much, but i feel that...well, shanks lost hes right arm defending Luffy. I think that went a bit too far. Now he can basicly never be the pirate king. It just feels bad, that Luffy kind of becomes the pirate king in Shanks place, and if Luffy had just kept hes mouth shut in that tavern, everything would still be ok, but ofcourse he didnt since he was a 7-year old spoilet little brat. I dont think Luffy to this day fully understands just what he did, and what were the consequences of hes actions