This is an interesting thread . The Scotsman once again is absolutely right . If you are coasting , your not in control . If a car suddenly appears round a bend on your side of the road , you more than likely won't be matching the running speed for whatever gear you were in when you pulled the clutch to coast , panic dropping the clutch at relatively low speed can lock the rear wheel . If your coasting in neutral , you havent got power on tap to avoid a situation . I have on a few occasions had to power out of a situation involving oncoming traffic . In short it's best to always be in the appropriate gear for the speed your travelling and in total control of the engine and hence the steering . If it's peace and quiet with the wind rushing through your hair that your after , consider lycra and a couple of pedals , or maybe a hang glider ?