At least for Korean eSports players (which there are quite a few), one of the hurdles is mandatory military service. Many times people leave the scene and just

At least for Korean eSports players (which there are quite a few), one of the hurdles is mandatory military service. Many times people leave the scene and just never get back into it, or at least not at the level they were previous to their military service. I think I've also seen some talk about how even a few years of age can affect how fast your reflexes are, in terms of actions per minute, etc. But that more experienced players can do more with less APM. Taking away or breaking up the best times of eSports players certainly isn't helping their career length.