After getting way more than he bargained for, Sora has been sort of wanting to go back home ever since KH1, he just hasn't been able to settle down for one reason or another. Either he's out looking for people like Kairi, Riku, and now those in torment, the universe is in danger and there aren't many people to handle it because universal wide crises are more or less relegated to Keyblade wielders, he gets trapped somewhere, or the universe is just being a dick.
What ever the reason, Sora has been continually traveling and wielding the Keyblade because he feels he needs to, but when he thought the danger was over by the end of KH2 he was ready to settle back down in everyday DI life with Riku and Kairi citing that things haven't changed. Even in BbS's secret ending he has to explain to Kairi why he has to leave again sine they all thought they were going to stay home for good. Or at the very least, if they were to go out traveling again it wouldn't be in that way.
Given the choice and Sora didn't feel like he had to do it, I think Sora would settle down, at least to an extent. He's an adventurous and just rolls with things, but at the same time, he's been thrown into a life that demands way more of him than he was ready to give and is constantly asked to leave his home, family, and friends behind at a moments notice and his job even puts all of that in danger. He's constantly risking his life and well being for people he doesn't know and taking on a responsibility he never asked for but someone has to do it.
Once Xehanort is defeated and if there's no immediate danger, I think he's just going to want to go home and conk out forever. Well, at least until the next Armageddon is about to happen anyway.