"People got on and off just as if the world wasnt going to end."

"People got on and off just as if the world wasn’t going to end." I noticed this line in the book and found it quite strange. It was an odd thing for the narrator to say especially since he knew the world had not ended because he is telling this story many years later. After reading it a few more times i realized the narrator was putting himself in Robert's shoes. feeling the sorrow from the death of his older sister who he loved so dearly and would do anything for because he was her guardian. He changed the point of view from his own to Roberts. Robert feels as though he has nothing left to live for, so he decides he’s going to join the army to try and get away from everything that will remind him so much of his sister Rowena. He doesn’t realise the hardship of war when he makes this decision. He doesn’t know that he is not ready to face what happens and the consequences involved in battle. This was very irrational of him to do. But losing the person you care about most in the world can be detrimental to you train of thought. You may do something very impulsive that you would regret later on. Putting myself in Robert’s position I would be thinking the same way. I have nothing to live for and my existence might as well not be here anymore. This is what I comprehended from the quote above, Robert Ross had nothing more to live for and basically thought his world was over.