Why? Please Explain....

Stephanie • Graduated from Western Michigan University 14' . Successful and beautiful. Mom to a 9 year old son. Due 1/27/16.
I was just wondering if someone could explain to me why a person wouldn't want any pain relief during childbirth? I seriously can't comprehend why someone wouldn't want something when it's available. I'm being serious so if you have a logical explanation I would love to hear it.