Ha! Wait till you hear about scout helicopters.

• no armor, no 120mm, still consumes as much fuel as armored vehicles
• Any hit to any rotor (big or small) takes it out
• Any damage to the thin tail boom can cause a crash
• Cockpit not just exposed and vulnerable, but can also easily be hit from the ground
• Flies low and slow so they get shot easily
• Cannot operate high in the mountains because of thin air
• Cannot operate too close to the ground because of sand in engines and optics
• Is inherently unstable and constantly trying to kill all occupants
• Literally became useless the moment drones were invented