The Christian Concept of Jesus' Begottenness is Silly

The definitions of the word "Beget", from the Oxford Dictionary:

1. (especially of a man) bring (a child) into existence by the process of reproduction. ‘they hoped that the King might beget an heir by his new queen’
2. Cause; bring about. ‘killings beget more killings’
3. Origin: Old English begietan ‘get, obtain by effort’ (see be-, get).

In Matthew 1, we have so-and-so begat so-and-so, which seems clearly consistent with Definition 1 (i.e., Abraham copulated with Sarah, and the result was Isaac). Similarly, Genesis 5 shows a lot of copulating and begetting going on. So much so that, in Genesis 6, the "Sons of God" wanted to joint the fun.

And it came to pass, when men began to multiply on the face of the earth, and daughters were born unto them, That the sons of God saw the daughters of men that they were fair; and they took them wives of all which they chose...There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became mighty men which were of old, men of renown.

The sons of God were "coming in unto" the daughters of men, and doing some begetting (Definition 1, above). How did the "sons of God" come into being? They were most likely the result of some jiggery-pokery between Yahweh (then known as El) and his consort Asherah.

Which means that Jesus is not God's "only begotten son."  God has some immortal half-brothers, presumably living in Heaven, and no longer seeking to have good times with our hot young blossoms here on Earth.

If we look at the Niceno-Constantinopolitan Creed

We believe in one God, the Father Almighty...And in one Lord Jesus Christ, the only-begotten Son of God, begotten of the Father before all worlds (æons), Light of Light, very God of very God, begotten, not made, being of one substance with the Father;

What the heck is that supposed to mean? It continues that Jesus

came down from heaven, and was incarnate by the Holy Ghost and of the Virgin Mary, and was made man;

Wouldn't this be the point at which Jesus was begotten--when the Holy Ghost and the Virgin Mary got together?

Now the Orthodox Presbyterians proclaim:

In the unity of the Godhead there be three persons, of one substance, power, and eternity: God the Father, God the Son, and God the Holy Ghost: the Father is of none, neither begotten, nor proceeding; the Son is eternally begotten of the Father; the Holy Ghost eternally proceeding from the Father and the Son.

"Eternally begotten?" Once the sperm cell hits the egg, begetting ends.