When a woman allows an unprotected man inside of her, speaking for myself, she is well aware that they are doing everything necessary that could result in her impregnation. But I think the majority of women regard this as part of the excitement. She is looking forward to being filled with his sperm, the essential ingredient for procreation, but at the same time, she is praying that the pill, or other form of contraception, will work! I don't believe that a substantial amount of women who engage in this lifestyle are actually wanting to be impregnated. Sure, they fantasize about being bred, but that's where I believe the vast majority want it to remain, a fantasy!