but if it should happen, having your feet on the pedals, ready to brake (differentially) might be the difference between a non-event or making the world headlines.
Ever tried walking just using your heels? Difficult and for some, quite painful.. In an emergency there may be a reason for deliberately landing with toes poised on top of brakes while trying to steer the rudder with using your heels. But totally unnecessary for normal day to day landings.