As for the Mary-as-ever-virgin thing, I really don’t see why, after the point of Jesus’ birth, it would matter any longer. Wasn’t the virgin birth a sign? The message had been delivered…
Oh goodness…we have received the message…throw the envelope away
Anyway, why worry about whether her having relations with her husband (“marriage is honorable in all, and the bed undefiled”) would mean any dishonor to Christ?
It does?

I thought it was because it would dishonor Mary’s wishes?
Luke Chapter 1: [26] And in the sixth month, the angel Gabriel was sent from God into a city of Galilee, called Nazareth, [27] To a virgin
espoused to a man whose name was Joseph, of the house of David; and the virgin’s name was Mary. [28] And the angel being come in, said unto her: Hail, full of grace, the Lord is with thee: blessed art thou among women. [29] Who having heard, was troubled at his saying, and thought with herself what manner of salutation this should be. [30] And the angel said to her: Fear not, Mary, for thou hast found grace with God.
[31] Behold thou shalt conceive in thy womb, and shalt bring forth a son; and thou shalt call his name Jesus. [32] He shall be great, and shall be called the Son of the most High; and the Lord God shall give unto him the throne of David his father; and he shall reign in the house of Jacob for ever. [33] And of his kingdom there shall be no end. [34] And Mary said to the angel:
How shall this be done, because I know not man? [35] And the angel answering, said to her: The Holy Ghost shall come upon thee, and the power of the most High shall overshadow thee. And therefore also the Holy which shall be born of thee shall be called the Son of God.
A question: Mary already
has a fiance. Why would she ask, “How shall this be done (have a son), because I know not man?” when in fact, Gabriel did
not mention that she was going to be pregnant
right there and then?
And even if it would, didn’t He purposely dishonor Himself by coming to earth in the first place, let alone being born in a stable? There might have been animals born in the same barn, so why worry about whether another person was born from the same womb?
Imagine, WholeHeart: you are a pious Jew who cannot even say or
write the name of YHWH out of deep respect and fear of Him. You grew up with stories of Moses having to remove his sandals to get near the burning bush, of stories of people dying on touching the Ark of the Covenant, of scenes of priests doing elaborate cleansing rituals before entering the temple. You married a woman who you learned was made pregnant by YHWH, and she is carrying in her womb YHWH. Add the fact that your wife wants to remain virgin after her birth. And YHWH talks in your dreams about how to take care of your wife.
Are you going to have sexual relations with her after the birth of her first-born Son?
I honestly do not know if Jesus, the Holy Spirit, or the Eternal Father would have minded (other more knowledgeable people may know about Catholic doctrine on this), but the pious St. Joseph? I think he would have minded a LOT.
As for the Catholic/Protestant division, the whole thing reminds me of the Paul/Apollos camp controversy, to which Paul answered something like this (loose paraphrase follows)… “Shut up about it, you’re all Christians. I sure didn’t die for your sin.” Peter didn’t die for our redemption any more than Paul did…
Well, St. Peter for sure did not teach anything that was contrary to St. Paul’s teachings, and vice versa. Do you think Jesus would be happy that Protestants protested against His own teachings through St. Peter AND St. Paul, among others?