engineers generally want a Lift to Drag ratio to maximize the distance which an aircraft can fly.

In aircraft aerodynamics, the lift-to-drag ratio, or L/D ratio, is the amount of lift generated by an aerofoil, divided by the drag it creates by moving through the air. A higher or more favourable L/D ratio is typically one of the major goals in aircraft design; since a particular aircraft's required lift is set by its weight, delivering that lift with lower drag leads directly to better fuel economy, climb performance, and glide ratio.

Lift/Drag x Height loss

advantage :high lift to drag ratio

disadvantage:difficulity in manover

The production of lift creates induced drag. To create more lift, more airspeed is needed, and with airspeed, comes drag.