I'll float a use case, which I admit though borders on science fiction. Still, it could be done without breaking the laws of physics.
"Construction of a multi-generational ship, in orbit, designed to travel for hundreds of years between stars".
Discussing this in-depth would take a book, but by necessity this ship would be very (very) large and would require an extraordinary amount of mass to be ferried into orbit.
Of course this unlikely to happen during starship's lifetime, but hey, it's at least a legitimate use case.
"Construction of a multi-generational ship, in orbit, designed to travel for hundreds of years between stars".
Discussing this in-depth would take a book, but by necessity this ship would be very (very) large and would require an extraordinary amount of mass to be ferried into orbit.
Of course this unlikely to happen during starship's lifetime, but hey, it's at least a legitimate use case.