I think women are not born with the innate ability to be mothers. But when the time comes for their motherhood, they do their best to care for their offspring. This is often done even without the benefit of prior training or education. They suddenly get thrust into this world wherein the baby that they delivered is now fully dependent on them. And because of this dependence, they had to let go of certain aspects of their lives: their free time, their career, their social life.