The Straw Hat Pirates are the crew of One Piece‘s protagonist Monkey D. Luffy. Aprt from Luffy, there are currently 9 confirmed members of the crew but several others who have spent time on Luffy’s ship and joined them on a number of adventures. By the way, Carrot is not yet an official member of the crew, despite her being part of their adventures for some time now.
This group has gone through a lot together and have increased in notoriety but without Luffy finding them when he did, they would likely all be dead by now and I will explain why.
Roronora Zoro was the first crewmember of the Straw Hat’s who Luffy recruited. Has Luffy not arrived, the former Pirate Hunter would have been exacted by the Marines, as Luffy had encountered him while in captivity.
Nami the eventual navigator of the crew would have remained under Arlong’s control and she would still be working towards paying back Arlong. We already know that Arlong had no intention of keeping his word and so, Nami likely would either be dead by now or her entire village would be dead. The possibility of both being dead is also highly possible.
More on page 2.