Sex dolls are safe for many reasons, but one of the most beneficial safety features of a sex doll is that it is impossible for a sex doll to become pregnant. Although this may seem obvious it is major a benefit to using a sex doll. Unplanned pregnancies are a risk in regular human relationship and can change your life in ways that you never expected. When using a sex doll there is no risk of pregnancy and no need to use a contraceptive.