We are but a summation of the good and bad that has occurred in our lives and if we were to throw away the bad then we would also throw away important parts of ourselves.
It is a difficult adjustment to make to a world without magic but it is fascinating nonetheless. And you needn't hide away your magic, my dear. This world is entirely aware of what we can do and the Statute of Secrecy hardly applies. Circumspection is still advised however.