Jesus dwelt in the house of Mary and Joseph, thus apparently making it a Holy of Holies. Were all visitors vaporized at the doorstep? Wouldn't the ordinary human Joseph have been killed instantly, and contrary to scripture? :)
In addition, if Mary's womb was a Holy of Holies, then wasn't it made unclean every month during Mary's period? It seems to me that if a pass can be granted there, then a pass can be granted for the BLESSINGS of Mary's other children.
Why would the earliest Church liturgies call Mary a virgin if she had other children? She would no longer be called a virgin. The fact that the Church defends this doctrine, calling it infallible, says something about the deeper meaning of Mary's ever-virginity that goes beyond what lies on the surface. To an uninitiated, to one unfamiliar with the mysteries of the faith, Mary's virginity or lack thereof has little meaning. This explains why you argue against it so much - you don't understand its deeper meaning. However, to help you, think of Mary and the Church itself as interwoven. What is said about Mary in Scripture can be said about the Church theologically. The two are used interchangeably by the Church Fathers interpreting Sacred Scripture. Thus, what we say about Mary reflects not only Christology, but Ecclesiology as well.
It wouldn't do to say that the Church is not the Virgin bride of Christ. The faith is a web. Be careful of removing what you don't agree with or understand, as it effects our beliefs on other subjects.
Regards
I was thinking about that earlier and my guess is that the Catholics will insist that Mary bore Jesus in a pre-pubescence state and then immediately went through menopause after Jesus was miraculoulsly delivered in a bloodless and painless supernatural "walk-though-the-uterine-wall" Caesarian delivery.
Hence the title of "unclean" could never have attached to Mary because she never had a period and never had a blood issue.
It's all part of the "Immaculate Hymen" doctrine. Since I suspect that the pope is a lurker, I expect a papal ex-cathedra declaration on this subject any day now.