I hear you that such a large rocket is not “needed” very often, but it can still be used. I believe the plan is to ramp down falcon 9 production and go to starship launches for everything, even smaller payloads, simply because it’s cheaper and more sustainable. As long as they launch regularly, the price should still be lower than falcon 9. And at least on paper, it is more sustainable, burning methane results in cleaner exhaust than burning kerosene, the only major exhaust products are CO2 and water. And not letting an upper stage burn up or fall into the ocean is an ecological plus too.
I hear you that such a large rocket is not “needed” very often, but it can still be used. I believe the plan is to ramp down falcon 9 production and go to starship launches for everything, even smaller payloads, simply because it’s cheaper and more sustainable. As long as they launch regularly, the price should still be lower than falcon 9. And at least on paper, it is more sustainable, burning methane results in cleaner exhaust than burning kerosene, the only major exhaust products are CO2 and water. And not letting an upper stage burn up or fall into the ocean is an ecological plus too.