The one piece is something every man, woman, rabbit or even dragon people are after. But what is the One piece? That is the whole thing keeping us watching. What is the one piece? Thats the question everybody is thinking. What did Gol D. Roger hide so great that everybody wants it? To answer that question. We don't know. Thats why I'm here to theorize what it is.
If the one piece is so great, it couldn't just be one measly piece of phoneglyphs, Swords or even money! This gives you the title of, King Of The Pirates! Maps, phoneglyphs, swords and money etc. Don't particulary give you the name, king of the pirates.
The Marine Admirals, (Kizaru, Akainu etc.) Are admirals because of devil fruits. Devil fruits, (according to my knowledge.) Are fruits that give you powers, if you watch one piece you'll know. Devil fruits give you power depending how you use them. Maybe the one piece is a devil fruit, and only those who know how to use them can reach it. If they can't, that means they can't use the devil fruit well.
Arguably this is also a bit wierd, as you cannot approach laughtale (if that is the place of the one piece.) with a devil fruit, than what will Luffy do? How will you know you can use a devil fruit without having one? Well I dont know.
Back to the theory: The One Piece is most likely to be A new unknown Devil fruit. Again its because it cant just be maps or swords thats just Boring. (no offence Nami and Zoro I still like you two.) This is conected with the bounties of pirates. Bounties are based off the power, and the threat you have to the world. Devil fruits give you strong power meaning you may get a high bounty because of your abilities. Of course, strong people, rabbits, trolls and giants are the most likely to reach near the one piece because of their strength. To reach the one piece you need to fight others. Reaching the one piece is a path of endurance. Which if you wish to endure you need strong abilities. Thats where the devil fruits come in. Devil fruits again give you abilities. And like Luffy they can be used for different ways because he caught carp with the gomu-gomu no mi. The one piece is something that gives you strength and makes you feared like devil fruits.
Do you agree with me?
