What do you think Luffy would be like if he never ate the gum gum fruit?
He would still do some powerful blows but probably not as strong.
He would most likely taken up the same battle style as Garp, and possibly copy/develop his own version of Rokushiki as well. That being said, without his Devil Fruit he couldn't have beaten Buggy and Don Krieg when he did, and he'll definitely be dead against Enel.
I think that the anime (the rest of the story as we know it at least) just wouldn't exist because Shanks became the reason Luffy wanted to become a pirate
Just like super man without his under wear...
he would have probably trained hard sails in the seas until he stumbled across another devil fruit which he accidentally ate because he is luffy
and the devil fruit he ate is the gamu gamu no mi 😆
What do you think?