The way you say that you think Nonito Donaire should retire simply shows that you think his career is over. I think let's just watch from the sideline the outcome if ever Nonito decided to move to lighter weight. I know he still has that KO punch but then I hope he still retains 90% of his speed. I think he has an advantage in the lower-weight division since I believe he can withstand punches in that division more than his current.
Yeah I think he's still can compete with the other boxers, Inoue is too much for him since Inoue currently is the top 1 pound for pound professional boxing, he even beat Usyk, Crawford, Spence, and Canelo. If Donaire will lower his weight, then he and Jerwin Ancajas will start collecting a belt for their country. If Ancajas is challenging Martinez, then Donaire could challenge Joshua Franco.