I'm not trying to pick a fight. We simply disagree that each human life represents a miracle of God. I don't even remotely view such a disagreement as anything more than a curiosity. I was merely looking for more insight into your original statement. You gave it to me. Thank you.
The ordinary technical definition of a miracle is something that violates natural law. God newly creates each human soul, but this is a basic part of the everyday process of life. It happens many thousands of times every day.
The Bible suggests that the births of Isaac and of John the Baptist were miraculous in a stricter sense, because in both cases their parents were far beyond the age when they could naturally conceive a child. Abraham and Sarah were said to be a hundred years old and tell the Three Young Men that they have ceased to have sexual relations when they are told that they will have a child within the year. The story of John the Baptist echoes that earlier miracle and divine promise. That sort of thing doesn't happen every day.
You can say more loosely that each human conception is miraculous, because God takes an active part in forming the new soul. Or you can go further and point out that the universe would cease to exist if God did not continue to sustain it. But that's not the way the term is ordinarily used in its strict sense.