About 15-20% if all pregnancies in the US end in miscarriages (spontaneous abortions) and are defined as a loss of the pregnancy before the 20th week. There are about  4.4 million confirmed pregnancies in the US every year. About 500,000 end in miscarriage, 26,000 end in still birth, 19,000 end in death after the first month of life and 39,000 die in the first year of life. 1 in 4  ( some stats show 1 in 3) pregnancies end in miscarriage and estimates that over 40% of  pregnancies end in loss. Why do you leave this "gauntlet" out of pregnancy that show clearly that at least a million pregnancies a year in the US will never make it to term and some that do the baby dies shortly after birth or in the first year of life. I had 3 miscarriages myself in the early months. I wanted my zygotes and nature ( God) wiped them out of the only home they had ever known inside my body, so why is that?  Childbirth is a natural occurrence but also childbirth often ends without a child.