Everyone needs speed, wingers and forwards need it more. I'm sure you knew that so what was the point of the thread?
How about qualifying it some? I would say that a striker with top speed can be the most dangerous player if you can hit him in stride with a through ball.
cuz he is probably a lil kid. anyway, any position that plays on the wing and forward can use it the most, but i wouldnt say it is necessary anywhere. it is kind of a dumb thread, sorry for judging =\