Well yeah, but that’s just an argument for looking for extraterrestrial fuel sources. Insofar as your fuel comes from earth, putting it in a depot isn’t obviously worse than launching it on an as-needed basis, and arguably it’s better. And insofar as your fuel doesn’t come from earth, then similar considerations could weigh in favor of a depot. (The tanker from the Belt comes once a year with a buttload of fuel, puts it in an earth-orbit depot and leaves)
Well yeah, but that’s just an argument for looking for extraterrestrial fuel sources. Insofar as your fuel comes from earth, putting it in a depot isn’t obviously worse than launching it on an as-needed basis, and arguably it’s better. And insofar as your fuel doesn’t come from earth, then similar considerations could weigh in favor of a depot. (The tanker from the Belt comes once a year with a buttload of fuel, puts it in an earth-orbit depot and leaves)