This is not a generally applicable pattern for human marriage. It's a one-off thing.
About that role model thing...
Strange...
I don't think God preserved her virginity at ALL!
It goes against EVERYTHING that a MARRIAGE is about!
After she had Jesus, Mary had more children with her husband Joseph.
10 A wife of noble character who can find?
She is worth far more than rubies.
11 Her husband has full confidence in her
and lacks nothing of value.
12 She brings him good, not harm,
all the days of her life.
13 She selects wool and flax
and works with eager hands.
14 She is like the merchant ships,
bringing her food from afar.
15 She gets up while it is still night;
she provides food for her family
and portions for her female servants.
16 She considers a field and buys it;
out of her earnings she plants a vineyard.
17 She sets about her work vigorously;
her arms are strong for her tasks.
18 She sees that her trading is profitable,
and her lamp does not go out at night.
19 In her hand she holds the distaff
and grasps the spindle with her fingers.
20 She opens her arms to the poor
and extends her hands to the needy.
21 When it snows, she has no fear for her household;
for all of them are clothed in scarlet.
22 She makes coverings for her bed;
she is clothed in fine linen and purple.
23 Her husband is respected at the city gate,
where he takes his seat among the elders of the land.
24 She makes linen garments and sells them,
and supplies the merchants with sashes.
25 She is clothed with strength and dignity;
she can laugh at the days to come.
26 She speaks with wisdom,
and faithful instruction is on her tongue.
27 She watches over the affairs of her household
and does not eat the bread of idleness.
28 Her children arise and call her blessed;
her husband also, and he praises her:
29 “Many women do noble things,
but you surpass them all.”
30 Charm is deceptive, and beauty is fleeting;
but a woman who fears the Lord is to be praised.
31 Honor her for all that her hands have done,
and let her works bring her praise at the city gate.
Virginity can only be considered an honor if one believes that sex is wrong.
And especially if one believes that sex between a husband and wife is wrong.
Joseph was legally married to Mary at the time of the Annunciation. The angel told him in a dream to not be afraid to take Mary AS HIS WIFE.
That would be a mighty strange thing for the angel to command if GOD considered Mary to be a perpetual virgin and spouse of the Holy Spirit.
It is clear in Scripture that Joseph did not know her until AFTER she delivered Jesus. And it goes on to name brothers and sisters, using the Greek words for brother and sister, not the Greek word for cousin. They did understand the difference.
You all have a real problem on your hands because when the Holy spirit impregnated Mary, she was already a man's legal wife.