What if we're trapped here?

What if we're trapped here on earth?

What if our materials and propulsion technology can neither protect us from harmful deep space radiation, nor propel us to the distant planets outside of our solar system?

What if this is the general case across the universe?

Then no sentient life would be able to visit another sentient life outside of it's native solar system.

All we have are each other, and perhaps that's for a reason.

If the universe were a simulation--the new vogue topic--then perhaps a component of this simulation is to not introduce other forms of sentience as that may, one, be too complicated for the system simulating our universe, and two, may interrupt the pattern of the universe as it requires our thinking it.

And that's more pop-philosophy bullshit for the reader.