Starship needs to be fully and completely reusable, and rapidly so.
It's being designed to be relaunched an hour after landing, with zero nominal work.
Like you could have scheduled maintenance, or you could have something like a squawk issue just like commercial aircraft. But the only thing you expect to change on a regular basis is propellant. And it's got to be fast.
Now for the ship, unless you're launching due East from the equator, you've got to figure out some way to get the ship orbital ground track to pass over the landing site. Otherwise you're too far away. So the ship might take 3 orbits, 4 orbits maybe to get back over the launch site.
But I think we want to aim for a capability of 3 flights a day for the ship, most of which is taken up with getting the orbital ground track to come over the launch site. And then an hour for everything else.