Clearly one of the central struggles that Krebs faces as he returns to his "home" is the pressure that he is placed under to conform and to get a job, marry and settle down and then his own desire to avoid any form of responsibility and commitment. It is this above all that makes Krebs feel alienated and isolated, as he finds it incredibly difficult to truly care and to become attached to others after his experience of war. Note what the narrator tells us about him:
He did not want any consequences. He did not want any consequences ever again. He wanted to live along without consequences.
Note how this description of Krebs emphasises, through repetition, how tired and exhausted he is emotionally, and how desperate he is to avoid any form of commitment. The pressure that he is placed under to get a job and make something of his life, and how he is compared unfavourably to others, such as Charley Simmons, by his mother, likewise adds to this pressure. They are expecting him to conform and to "settle down" to a life that Krebs cannot relate to.