I agree with the above posters. In a hospital, you have to fight tooth and nail for your natural birth and that means dealing with a lot of fear and anger - two emotions that you should never have to feel during childbirth and which can keep you from being able to have your baby naturally at all. Fear is one of the worst "birth complications" in my opinion. No laboring creature, human or otherwise, should have to fight during childbirth. It's a time when you really need to allow yourself to relax to the fullest and allow your body to work while your mind goes to a very very far away place.
Trying to have a baby naturally in a hospital is (in my opinion) like trying to stay aroused during sex while lying naked in the middle of a New York street during rush hour traffic.
If you are going for a natural hospital birth, it's very important to talk at length with many care providers and find out what they think about your choices and whether or not they will work with you.
Like many women, I found that I reached a point during transition where if I was in a hospital, I would have asked for drugs. I was out of my mind. Being at home was peaceful, quiet, and dark. I was able to focus on the birth, not beeping machines, a tube in my arm, and what a million strangers were doing going in and out of my room and ordering me around, threatening me, or asking me questions.
Having a home birth was, for me, pure bliss. No one told me what to do. I did what I wanted and went where I liked. I was able to move around to help with the pain. There were no needles stuck in me and no drugs put into my body through my IV without my consent. It was dark and quiet. I caught my own baby!
: I've never felt power like that in my life!
No one took my baby away. No one poked her or put medicine in her eyes. No one hurt her or lay her on a cold metal table or dried her vigorously off with a rough towel (I always cry when I see them do that in hospital birth videos). There were no bright lights. No one suctioned her. All she knew when she came into this world was that it was soft and warm and gentle and smelled like Momma's sweet warm milk.