User blog comment:Neowitch/700 - Breakfast at Mugiwara's/@comment-22857866-20130227152337/@comment-5888163-20130227163232

Tbh at the start i agree with you guys about luffy not giving a shit but then that fruit is like the only thing left that is connected with Ace. Maybe would want it as a momento or maybe he doesn't want "evil" guys using that DF.

+ Also i think whoever its the Mera Mera will join SHP or luffy would keep it for keepsake then somehow they would learn how to absorb another DF like BB did so Luffy might do the same or he just might accidently discover how to do it while trying to retrieve the DF.