Because airplanes look cool. Besides, the ships do fly through the atmosphere once in a while. Wings are good in atmosphere. But even then, the Crusader, Hammerhead, Rhino... don't really have airfoils.
The F-22 can't shoot down ICBMs. ICBMs can travel 15,000 miles per hour, and max altitude can be 500 miles. Also, most radars just aren't made to travel targets travelling that fast.
However, I think it is the Air Force's goal to have the F-22 be the equivalent of cloaked Valkryies attacking an unarmed Starflier
ER
The F-22 can't shoot down ICBMs. ICBMs can travel 15,000 miles per hour, and max altitude can be 500 miles. Also, most radars just aren't made to travel targets travelling that fast.
However, I think it is the Air Force's goal to have the F-22 be the equivalent of cloaked Valkryies attacking an unarmed Starflier
ER