Anabolic steroids are safe and have no real bad side effects apart from raised blood pressure, raised cholesterol, water retention, gynecomastia, enlarged left ventricle of heart, liver stress, shrunken testes and infertility, altered sex function, balding, acne, altered psychological states, virilization in women, etc.
Creatine, on the other hand, is some hardcore shit and should not be taken if you care about your body and living a long, healthy life.