And running away is not what these aircraft are designed to do. With higher airspeed you lose maneuverability. Speed is life refers to any aircraft and the abil

And running away is not what these aircraft are designed to do. With higher airspeed you lose maneuverability. Speed is life refers to any aircraft and the ability to trade speed for altitude. This should get you started on why the trend is to build slower lighter more manueverable airfraft... https://en.m.wikipedia.org/wiki/Energy%E2%80%93maneuverability_theory https://en.m.wikipedia.org/wiki/Energy%E2%80%93maneuverabili...