Hmm….
Why not just build the F-22, and if you someday get a computer good enough to run it without a pilot…Hey, there's a suddenly empty seat right there! What a neat space to stuff the Big Black Box!
Yes, the Drones are coming, but I think they will look suspiciously like manned fighters when they get here, as the design requirements are pretty much the same. Wings, check. Engine, check. Stealth, check. Landing Gear, check…etc.