Who said once Lord Voldemort died the wizarding world would be safe? Molly Weasley II and Albus Potter find out it isn't firsthand nearly as soon as term starts.
Maybe I had a reason for doing what I did? Maybe I hated my life so badly I couldn't stand the thought of remembering it anymore? I needed a second chance at life. I needed to start it over again. I needed to obliviate myself. This is my second chance.