Its about the fact that we are there then. I mean, currently we are not on mars, etc.
Our robots are, but we are not. People who have been out there (Apollo), they were there and can us tell about it. A machine cant do that.
Its like Im watching a documentary about Australia and then claim “yup. been there, done that”.
Unless some of us were really there, it will all be just remote expierience and theory.
By the way, one geologist could gather more data on mars in an hour than a clumsy and awkward to control robot in a week…
Granted, the robot needs less life support and can endure a somewhat harder landing, making it cheaper, but nobody ever said that spaceflight is freemium