No, it is not ludicrous. As Elon likes to point out, imagine how expensive it would be to fly if, after every flight, they threw away the plane. That's exactl

No, it is not ludicrous. As Elon likes to point out, imagine how expensive it would be to fly if, after every flight, they threw away the plane. That's exactly what people traditionally did with rockets. The result is that the cost to fly a jet is mostly the cost of the fuel, while the cost to fly a rocket is the cost of the rocket. Consider a Falcon 9 launch. Thanks to reuse, the cost to relaunch is in the neighborhood of $30 million. The cost of the fuel is about $200,000. Over 99% the launch cost is depreciation, maintenance, or having to replace what you didn't reuse. The aim with Starship is to make the cost of a launch as close to the cost of the fuel as they can get.