Emotionless or Content?

In The Stranger part 2 chapters 1-4, Meursault begins his acclimation to prison life. He finds that although he is no longer happy like he used to be when he was free, he became used to being in prison. Once his trial begins, Meursault does not feel anything special towards his fiancee. Rather, he focuses on the idea of a woman and the purpose of one (to serve his base human needs). He is questioned about his reaction or his non-reaction to his mother's death and how he didn't cry once. I feel that this part of the chapter (89-90) shows that there may be something peculiar going on with his mind. This is further exemplified when Meursault tries to explain why he shot the Arab at the beach and says it was because of the sun. Meursault does not seem to have emotions that are significant other than the times where he feels too hot or in the sun. However, Meursault (in the last few pages of chapter 3) relates to a time when he felt happiness and contentment. Before part 2 (when he was not in prison), he had no real human connections or anything other than acquaintances in his life. He felt happy in his job, his living environment made him happy, and he did not form meaningful human connections. Meursault drew himself above human love and morals and pain to become free to be his true self and to be content with his life.