Cost to orbit isn't the only issue, maybe as part of building something else but actually shipping 100 people to Mars on Starship is wildly impractical. First b

Cost to orbit isn't the only issue, maybe as part of building something else but actually shipping 100 people to Mars on Starship is wildly impractical. First big hurdle is actually getting the Eyes Wide Shut refueling to work and you have to do it multiple times for each Starship you're sending. Then there's not that much space in the upper stage of Starships to pack that many people and several months worth of food. It's approaching possible but you'd be jammed in like cordwood not having the time of your life in a big open atrium.