Talk:Hashira/@comment-27973430-20190721124747/@comment-27973430-20190723131813

I don't remember any mention of how long most pillars are active for in the manga. Also, that reasoning of yours does not justify their young ages at all.

Pillars are the strongest humans that the Demon Slayer Corps has to offer which means that their strengths are at, or are close to, the peak fighting ability a human can possess. And for some reason all of the pillars that were active in the series had attained this peak level strength at an age where they can still improve a great deal before they start physically weakening. Although Kyojuro maxed out his potential at 20 apparently according to Akaza even though that doesn't make much sense.