You contradict your self, unless of course you think amnesia and suicidal thoughts make you happy >.<

Charlie was happier at the beginning of the story. In the beginning of the story, he got sad sometimes about his condition, but tried to be happy. Then Charlie undergoes the operation and his intelligence level becomes higher than normal people. During the period in which Charlie’s intelligence is very high, he does research on the operation Algernon and him had, and discovers the negative side effects. Those who had the operation became very smart, but then they began to lose their artificial intelligence. This operation ultimately results in death, like it did to Algernon, Charlie’s mouse friend who had received the same operation. Once Charlie’s intelligence begins to decrease, he becomes sadder and sadder, because he knows that he will eventually lose all of his intelligence that he had gained from the operation. This makes him sadder than he was in the beginning of the story, because he felt like what it was like to finally be smart, and then lost it all. It’s like giving somebody a present and then taking it back. You would have been much happier if you wouldn’t have known about the gift in the first place, and never given to you or taken from you.