>>22874013To be honest, Ash really lost character traits as the series went on,
if we exclude BW he became more and more uptight, not cracking jokes and becoming more serious, some people who grew up it identify with this. Not to mention, his female companions are fetish fests.
And the whole point of the games is inserting yourself into the world of pokemon, Ash "offers" a way to do it without having to shill out for a 3DS and through another form of media.