Out of the goodness of their own heart? Public spiritedness? To put / give something back?
Why did you help RW out KK? What were your reasons?
Why do amateur sports coaches give of their own time to coach youngsters? For the same reasons perhaps. Who are we to question their motives if, in the vast majority of cases, it is for the greater good?
Perhaps the new Mods are adept on computers? Either way I, for one, applaud their selfess act for picking up what now appears to be the poisoned chalice; if they are getting constant critisism as a result from their fellows and peers!