Scripture also clearly states that Eve was the mother of all living. Why not simply say that Adam was the father of all living?
He did. He named man after him. Adam means man.
For what Adam did, God cursed the ground for. Why?
This has nothing to do with the fact that the Bible clearly states that Cain was conceived as a result of Adam having relations with Eve.
Jeremiah 3:1
1They say, If a man put away his wife, and she go from him, and become another man's, shall he return unto her again? shall not that land be greatly polluted? but thou hast played the harlot with many lovers; yet return again to me, saith the LORD.
Exodus 34:19-20
All that openeth the matrix is mine; and every firstling among thy cattle, whether ox or sheep, that is male.
20But the firstling of an ass thou shalt redeem with a lamb: and if thou redeem him not, then shalt thou break his neck. All the firstborn of thy sons thou shalt redeem. And none shall appear before me empty.
Whoever opens up the matrix is God's. However, Cain was of his father the devil. was it not Cain that opened the matrix of Eve? Adam was a son of God. Eve taken out of Adam, came from the same spirit as they were pure! Eve fornicated and out of that, Cain was the result.
Adam and Eve had fallen, so they were already impure.
John 8:38-44
I speak that which I have seen with my Father: and ye do that which ye have seen with your father.
39They answered and said unto him, Abraham is our father. Jesus saith unto them, If ye were Abraham's children, ye would do the works of Abraham.
40But now ye seek to kill me, a man that hath told you the truth, which I have heard of God: this did not Abraham.
41Ye do the deeds of your father. Then said they to him, We be not born of fornication; we have one Father, even God.
42Jesus said unto them, If God were your Father, ye would love me: for I proceeded forth and came from God; neither came I of myself, but he sent me.
43Why do ye not understand my speech? even because ye cannot hear my word. 44Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
They knew full well, what happened in the garden, and though physically, they were not born of fornication, spiritually they were. Here's another verse to mull over.
You are eisegeting into this....
1 Timothy 2:13-15
For Adam was first formed, then Eve.
14And Adam was not deceived, but the woman being deceived was in the transgression. 15Notwithstanding she shall be saved in childbearing, if they continue in faith and charity and holiness with sobriety.
Why is the woman saved in childbearing?
Prophetically, it was looking back to the birth of Jesus. Practically, it was promising that God would be with women during childbirth.
Deuteronomy 25:5-6
If brethren dwell together, and one of them die, and have no child, the wife of the dead shall not marry without unto a stranger: her husband's brother shall go in unto her, and take her to him to wife, and perform the duty of an husband's brother unto her.
6And it shall be, that the firstborn which she beareth shall succeed in the name of his brother which is dead, that his name be not put out of Israel.
Even if Adam was the biological father of Cain, by law, satan is his father because of spiritual fornication and the serpent (man) by the law of the flesh when he became one flesh with eve through physical fornication.