Hormones in Labor

My husband uses pregnancy hormones to explain my crying spells :) but I want to talk about hormones in a more positive way and how they contribute to the amazing birth process.  I feel this is important because you cannot "trick" hormones.  They will be produced in the body by real feelings and emotions.  That is why when people say that a woman desiring the "comfort" of a home birth as an unrealistic reason, I question their understanding about the process of birth because it's success is very much based on the comfort, relaxation, and support and love felt by the mother.  I am not saying that a mother cannot have these things in a hospital birth, but based on personal experience, it is not easy to feel relaxed in calm in a cold and uptight environment.