(1) the landing is simple, safe and reliable. If the actual landing speed is greater than the specified value, then when the main gear touchdown, in the main rounds of the force of the collision angle of attack decreases, and thus could not produce like taildragger landing gear as the "jumping".
(2) have a good directional stability, cross-wind landing safer. When taxiing, turn more flexible manipulation.
(3) no risk of inverted, allowing strong brakes, therefore taxiing after landing distances can be reduced.
(4) while in the slide down, up, down, airframe is horizontal or nearly horizontal and downward vision better, and Jet engine exhaust gases do not spray directly on to the runway, and less impact on the runway.