Originally for me it was because I didn't know what else to do with overwhelming feelings. They had to go somewhere. Later, it was in order to prove that my feelings existed. I didn't feel like other people believed me about how I felt, and was to the point where I was questioning it myself. Eventually, it became like a reflex. Any time I was upset I would express it physically, and I didn't care. It became an addiction. It didn't used to feel good, but then it did. Just the suggestion of pain feeling good can now make me want to do it again, even without having any reason. I haven't cut since August, but I have wanted to.