How long have you lived in Tokyo?
Over 4 years.
despite what you might want to think you still do live around "people "
Oh, is that what those black-haired things packed inside trains are?
They also have their gardens.
There are a few bushes and trees I pass on my way to work, but I prefer the cityscape and I generally completely look past all the green in favor of the tall shiny buildings.
Honestly grass is nothing I would miss, nor are trees.
I have also thought about the long-term future of the project, because it takes so much money.
What if they can simply no longer provide communications, send supplies, etc., 30 years later?
Being self-sufficient would happen quickly, however, so no one would die because of that. Just fewer people in the long run and no TV/Internet.
It would be more boring in that respect, but more fun in other respects. We would literally become our own independent colony, establish our own laws, elect leaders, and continue the growth of the colony “on our own”.
Look at the positive sides: Not a single STD on the planet, everyone is as intelligent as you are, etc. We would become a colony of ultimate humans, each one in top physical and mental shape.
And assuming communications do remain 30 years later, by that point we would be able to build our own rocket to return to Earth if we wanted.
It really wouldn’t be 1-way, though it would be a very very long lay-over.