I am an idealist, so I would like to think that we will somehow survive. Not all of us - just enough of us that so that we can for a little longer.
There is a line from the last Superman movie, where the disgraced general speaks of traveling across a great ocean of stars. I think the image is a powerful one. Imagine the largest ocean of our world - the Pacific Ocean - stretched across the immensity of space. There are so many "islands" in space, yet they are so far away. Even Alpha Centauri is an incredible distance away.
This is where I am now on the question, "Are we alone in the universe?". Unless by some miracle of us discovering life on the outer moons of our solar system, I don't see us being discovered by an alien intelligence, so I believe we will never know if there is life beyond Earth. Then the question becomes, can we create life beyond Earth by settling our system? It really depends on what our priorities are, doesn't it? Right now, most humans are coping with so many issues: poverty, conflict, sickness and disease, bigotry. I believe our civilization is ravaged by these named things and those which I haven't named, and that its vitality, its energy, is drained.
I do find it interesting that there is a barrier that prevents us from visiting other systems. If our universe is like the Matrix, as some believe, then the question becomes, why was that barrier created in the first place - why can nothing go faster than light? Is there something we aren't supposed to discover about our reality? In virtual reality, there are invisible barriers that prevent the visitor from traveling beyond an area. The visitor can see what lies beyond the barriers; however, unless they learned how to manipulate the reality to their will, the visitor can never get pass these barriers.