He wanted to be someone else since everyone else had a problem with him. All he wanted was to be himself be left alone helping others feeling excluded because he didn't want what everyone had or wanted. Making him feel like he was a threat to anyone he came in contact with.
Asking "what's wrong with me" "why is he like this" but he didn't say, or do anything wrong. They came at him sour and twisted. He didn't need or have much but thankful for what he had. While they had everything still complaining, making others feel bad by pointing out their flaws. It didn't make sense he couldn't wrap his mind around things.