Rolling release is unstable. You have absolutely no idea if any given update will crash some part of your system, because every variable of the known use cases

Rolling release is unstable. You have absolutely no idea if any given update will crash some part of your system, because every variable of the known use cases has not yet been re-tested and certified. Software and firmware updates from Linux distros have recently bricked modern hardware several times. This should never have happened, because a period of testing is necessary to evaluate whether a given update will cause failures. With rolling release, you update and pray.