Sanji has been back and forth a couple of times, this last time right before reaching Raftel. As a result he had been extremely antsy to get back home as soon as possible, and began taking a lot of risks not only to keep himself in prime fighting shape (because god knows what will meet him there) but to try and provoke the Porter into sending him away. He sold the Dream of Blue two years prior in order to buy a larger ship, on which he lived, but now he has a small crew he needs to release, a ship to sell or donate to some museum that would love a live replica of an old-fashioned caravel, and people to say goodbye to.

He's going home, and he's thrilled. And he may need to apologize for kicking asses and making enemies of some of the more boy-scouty heroes.