There is probably no aspect of the Christian faith that has been subjected to more abuse than the doctrine of the virgin birth of Jesus.
Satan hates the doctrine of the virgin birth because it clearly points to the divinity of Jesus. Satan has thus done everything he can to undermine the doctrine's validity.
Satan's most effective attack has been to raise up scoffers and mockers at the very center of Christianity — in the pulpit. The usual approach is to ridicule the nativity story as the product of the over active imaginations of ignorant disciples.
The Lord obviously anticipated this attack on His Word, for the Holy Spirit motivated a very special man to give us most of the details regarding the virgin birth. That man was Luke, who just "happened" to be a medical doctor! (See Colossians 4:14.) Isn't that neat?
Think of it, the Bible's leading advocate of the virgin birth was a highly educated man who fully understood the biological aspects of conception and birth. He was the person who would have been the most skeptical regarding any "legend" of a virgin birth.
Important too is the fact that the virgin birth of the Messiah was prophesied by the Hebrew prophets. This fact discounts the idea that the virgin birth was a johnny-come-lately idea conjured up by a bunch of illiterate and superstitious shepherds.