Originally Posted by Barcs
Why not? It has potential to grow into a baby, plus each one acts independently and survives outside of the person and are not attached. They have very short lives, but they are technically alive. Why should a fetus be any different? All it is is a fertilized egg. Technically the growth starts for the egg and the sperm way earlier, so why would it suddenly be considered growth now, when it's just a blob of tissues that look nothing like a person yet.
How does a sperm alone have the potential to grow into a baby? Yes, they're alive, but their more like pollen than a baby.