Genesis 6:2 says “The sons of God saw the daughters of men that they were fair; and they took them wives of all which they chose.” This may not be answerable but I would be interested in your thoughts on the following questions. I believe it’s rightly taught that these “sons of God” are angels. Their union with the daughters of men produced the Nephilim or giant offspring. It appears that God created only male angels as there are no indications of any female angels identified in scripture. What would be the logic of creating males and no females for one thing. and why would these angels even have the ability to produce sperm. I know God does nothing without a very good reason.
God’s logic in not creating female angels could be that there’s no need for reproduction in the angelic ranks, since angels live forever. Jude 1:6 explains that the angels of Genesis 6 abandoned their natural origins (first estate). This means they took on human form which allowed them to mate with human women. This was a huge violation of God’s Law for which they’re still being held for judgment (2 Peter 2:4).