I think you forget that many evolutionists believe the baby is not alive until sometime after it's born. They call it a "zygote" which is another name for "worthless mass of biological material not worth saving by someone who hates babies."
Yeah. You're right - that's exactly what atheists think. Zygote is definitely not a scientific word for a cell that is formed when two gametes join from sexual reproduction. It means "kill me atheists". *facepalm*