@InvaderXan
It perfectly aligns with Star Trek futurism, and is perhaps more realistic.

@jonlandrum Star Trek definitely fits the spirit of it!

From a sci fi perspective, I just like the idea of a future where Earth *isn't* a crapsack world that humans have completely destroyed due to capitalist greed. There are too many of those out there.

Also, it seems like any long term space habitat would need to be sustainable by definition.