No, it's merely incredibly difficult. Sustainable living off Earth is far beyond that.
Humans definitely can't leave. Humans are even less well suited to interstellar travel than they are to living at the bottom of the ocean, something they also don't do and have no idea how they could ever do.
So, with tremendous effort humans could visit one of their neighbouring planets. All of these planets are terrible. Mars is by far more hostile to life than anywhere humans have even visited, let alone had a permanent settlement. But we could do it. To what end?
Live here, or die here, those are your options and you should get used to it.
Humans definitely can't leave. Humans are even less well suited to interstellar travel than they are to living at the bottom of the ocean, something they also don't do and have no idea how they could ever do.
So, with tremendous effort humans could visit one of their neighbouring planets. All of these planets are terrible. Mars is by far more hostile to life than anywhere humans have even visited, let alone had a permanent settlement. But we could do it. To what end?
Live here, or die here, those are your options and you should get used to it.