If everyone had their own small planet to live on and care for (like in The Little Prince), what would your planet be like?
My own little world eh?
It would be a good distance from it's sun to the point where day is about as bright as a night of a full moon is here.
It would be cooler with the highest temperature about 70 Fahrenheit (or about 21 Celsius). But it would be kept from getting too cold by the extensive cave systems that bring geothermal heat up to the surface.
There would be bioluminescent jellyfish that float through the air like this:
Except real animals rather than machines.
Jumping spiders would be as large as dogs and just as smart and friendly.
Instead of trees large mushrooms would make up underground forests in large caverns illuminated by crystals that convert ambient heat into light. These mushrooms would be able to change colors like cuttlefish and sing like whales.
Soft moss would cover large portions of the cave floors.
The constant movement of air through the tunnels would make a nice calming "whoosh" noise and provide a gentle steady breeze.
People population would be sparse but enough that no one would feel lonely. There would be an internet but no trolls. Instead of regular computers however everyday objects like clothing and walls would act as displays.