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The space shuttle orbiters, engines and solid boosters have similar numbers, and similarly high maintenance costs. Very much a ship of Theseus question.
The space shuttles were different vehicles altogether, they needed three disposable parts to get to space. The SRB and the main tank were discarded after each use, they needed to be built from scratch every time.
It's not comparable to what Falcon can do, which is drop a payload in space, come back and fly again after a quick routine check and a refuel.
I love the space shuttle but it was a very different vehicle.
The srbs were recovered and reused. It was utterly ridiculous.
And the most expensive and complicated bits of the rocket, the SMEs and the Orbiter itself, were reused.
The only bit not reused was the main tank which was relatively simple in comparison to the other components
Oh yeah you're right, I read that a few years ago and didn't question it as it made sense given the cost of each shuttle launch. Thanks for the info!