As the human population fades away, one man decides to spend the rest of his life amongst the stars. He isn't trying to escape the extinction. He's trying to get away from something else.
A novelette by the author of The Man Who Watched The World End.
Not sure why
The loss of a special pet sends him on his way. I understand the feelings of love and loss as I lost my favorite mini schnauzer. After years of wonderful companionship I still miss her. But if earth was losing humanity what was the purpose of sending him on a voyage through the universe?