Why do you thinks it must change?
God told that man should work (Gen 2:15). As a result of sin curse, it became harder (Gen 3:17-19). But there are no such words about woman; In contrast, she is told to help her husband (Gen 2:18), and focus on family and children (Tit 2:4-5, 1 Tim 5:14, 1 Tim 2:15). All all her business is "in-house" (Prov 31). That is because God values family, and knows that it is by woman's effort household is being built or destroyed (Prov 14:1). So, even in world of sin, God never meant to sacrifice family to business. And never meant to change the purpose of truly fulfilled woman (Gen 2:18, Tit 2:4-5, 1 Tim 5:14, 1 Tim 2:15).
Why on earth people who claim to live by God's word think it must change since 20th century?
Bible verses referenced:
Genesis 2:15: And the Lord God took the man, and put him into the garden of Eden to dress it and to keep it.
Genesis 3:17-19: And unto Adam he said, Because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, Thou shalt not eat of it: cursed is the ground for thy sake; in sorrow shalt thou eat of it all the days of thy life; 18: Thorns also and thistles shall it bring forth to thee; and thou shalt eat the herb of the field; 19: In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return.
Genesis 2:18: ¶And the Lord God said, It is not good that the man should be alone; I will make him an help meet for him.
Titus 2:4-5: That they may teach the young women to be sober, to love their husbands, to love their children, 5: To be discreet, chaste, keepers at home, good, obedient to their own husbands, that the word of God be not blasphemed.
I Timothy 5:14: I will therefore that the younger women marry, bear children, guide the house, give none occasion to the adversary to speak reproachfully.
I Timothy 2:15: Notwithstanding she shall be saved in childbearing, if they continue in faith and charity and holiness with sobriety.
Proverbs 31:11: The heart of her husband doth safely trust in her, so that he shall have no need of spoil 12: She will do him good and not evil all the days of her life. 13: She seeketh wool, and flax, and worketh willingly with her hands. 14: She is like the merchants' ships; she bringeth her food from afar. 15: She riseth also while it is yet night, and giveth meat to her household, and a portion to her maidens. 16: She considereth a field, and buyeth it: with the fruit of her hands she planteth a vineyard. 17: She girdeth her loins with strength, and strengtheneth her arms. 18: She perceiveth that her merchandise is good: her candle goeth not out by night. 19: She layeth her hands to the spindle, and her hands hold the distaff. 20: She stretcheth out her hand to the poor; yea, she reacheth forth her hands to the needy. 21: She is not afraid of the snow for her household: for all her household are clothed with scarlet. 22: She maketh herself coverings of tapestry; her clothing is silk and purple. 23: Her husband is known in the gates, when he sitteth among the elders of the land. 24: She maketh fine linen, and selleth it; and delivereth girdles unto the merchant. 25: Strength and honour are her clothing; and she shall rejoice in time to come. 26: She openeth her mouth with wisdom; and in her tongue is the law of kindness. 27: She looketh well to the ways of her household, and eateth not the bread of idleness. 28: Her children arise up, and call her blessed; her husband also, and he praiseth her. 29: Many daughters have done virtuously, but thou excellest them all.
Proverbs 14:1: Every wise woman buildeth her house: but the foolish plucketh it down with her hands.