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Hopefully this restraint will become less significant for future missions. Starship should mean larger payload volume (less folding/structure required), far more payload capacity, far lower costs, and more frequent flights.

Refueling and refurbishment costs should become much more acceptable as viable approaches emerge due to dropping ticket cost to space.

only reason for 10 years is fuel, I think they are working on a robot to refuel it to increase the lifetime.

What's a generation? Longer than 10 years certainly, but many people have kids by their early 20s if not before.

I think typically a generation is around 30 years, but this changes over time. Currently it's higher in the western world, but it was shorter 100 years ago.