If there so many planets out there in space why aren't there any human colonies on other planets?

@HumanEarth :-) If so, it is taking us a long time to recover and re-learn whatever skills our ancestors had, to have arrived here in the first place!

Yeah, I read there's a theory that we crash here.

Honesty, I don't believe it. But what if

@HumanEarth Theory? Fantasy!

If it had happened, it would raise one or two very awkward questions indeed.

If it was written by a globalists and wanted to promote climate change. Then say they destroyed their home planet.

They would push the fact idea.

Like the whole life on Mars thing and them escaping the planet and crashing here. That's one crazy story I heard

@HumanEarth That fable you heard seems suspiciously lifted from a short science-fiction story I once read.

I forget the title and author but it was a sequel to H.G. Wells' The War Of The Worlds.

The premise was modern-day explorers from Earth, finding on Mars the remains of those Martian would-be invaders' own world, all now empty. The discoverers realised that the Martians gate-crashing of Earth was an attempt to survive as their own planet became the uninhabitable desert we know it as.