Earlier quoted context omitted.
Plus, your payload needs to be gun compatible. Not gonna put people in there.
Space is for robots.
Consider operators living on Mars and operating drones near their habitat each day. It would be like modern day drone operators and robot assisted surgery. Like remote operators of mega-trucks today.
Those robots could interact with the operators - driving into a "garage" that can be pressurized for maintenance, upgrades or science.
StarShip promises to reduce the cost of mass to orbit, making larger and more complex scientific, industrial and habitat options feasible.