The cost and frequency of maintaining airplanes is way less than helicopters, and most importantly, they are way safer.

If both engines of a plane fall off, a plane can float for miles to the nearest airport. If you lose a helicopter blade or go into an out of control spin, everyone is dead.

Twin rotors are super high maintenance and require strict checks to keep running properly. The more we have of them, the more likely a screwup is going to happen, not to mention the cost.

I agree that current aircraft should use twin-rotor helicopters to carry passengers, so that they won't keep rushing forward, like the CH-47 Chinook.

I agree that all aircraft should crash like the the v-22 osprey especially when carrying marines