The last decisions is on donaires's hands as we all know he is old enough but if he want to fight then for sure he have a solid support from the crowd but if he gonna hang his gloves and focus on his family then that's a good decision for him.
Old but still a champion, that's what's going to happen to him after this fight. He can retire as a champ or try to fight challengers to keep his belt, which would help him earn more money while he is still active. When it comes to retirement, there are only a few opportunities for fighters. One is the exhibition fight, but he'll not make a lot of money with exhibition fights compared to a real fight.
Personally, I would not speculate too much. I just want to witness Donaire fight again and remain hopeful that he'll win.