Because prophecy that a virgin shall conceive and bear a son had to have been fulfilled.
After that prophecy was fulfilled, her virginity was of no consequence.
Yes, I think bearing and rearing the Son of God made Mary and Joseph more holy. And again, there is no sin in marital sex, but neither is there sin in remaining celibate out of reverence for the fact that Mary’s womb had held the Son of God.
I also believe that if those water jars from Cana had been mine, they would not ever have been used again out of respect for the miracle that occurred in them. Would it have been a sin to be so wasteful? Would that be considered jar-worship?
If Mary and Joseph had had sex while Mary was pregnant, would Jesus not have been the Messiah?
Love,
O2
The automatic thermostatic heretic detector has just fired up the deep fryer.