User blog comment:Fliu/Chapter 939 Thoughts/@comment-24287735-20190412142746/@comment-24287735-20190413031603

Sure, there are a lot of series in which I can name that contains at least one strong grandpa, but Oda proliferates this trope way too much. The supposed-to-be "top of my game" age is between 20-40 years old and peaks at 25 (aka "young adult" the psychology term) and a lot of the major characters here are at least 41 and up. Even the admirals are years shy of being seniors.

Another note though, I support Luffy too growing old (at least 60-ish). I just think by that time he is finally voiced by a man.