All that mattered to the family was that Gregor was able to provide. The purpose for his existence was to serve his family. After his secret change to an insect was discovered, they realized that he was no longer of any use to the family and he was unappreciated in every way. This is made clear in the beginning of the story when Gregor wouldn't let anyone in his room in fear that they would be horrified by his condition. He felt that everyone was angry and wanted him to get up for work, which he somehow felt that he might be able to accomplish. This is the ultimate example of the loyalty which Gregor exhibited all of his life. After his change into an insect, Gregor presented a problem for he had no function in the family. They locked him up, imprisoning him by not allowing him out of his room. Slowly, his possessions were removed, and for some time no one bothered to clean his room. Anything that was not needed for the moment was simply thrown into his room. To them he was only a bug and not their son and brother. They chose to ignore all his good and self-sacrificing acts before the change and did not show him the respect, which he deserved. It is apparent that there were certain things within the family that Gregor's change into a bug did not affect. Understanding Gregor was something that his parents failed to do. Relations between father and son had always been strained, as if all of Gregor's efforts were to receive some kind of paternal approval. His mother, after speaking to Gregor for the first time after his metamorphosis did not recognize any difference in his voice. This seems strange since he himself was shocked as he heard his own voice answering hers. He knew that it was his own voice but that it had unmistakably changed drastically, suggesting that they didn't speak often. Therefore, both before and after the metamorphosis, they continued to misunderstand Gregor. They failed to realize that, even as a bug, Gregor was still there and that he could understand everything they had to say.
