"First of all your premise is wrong."
Then perhaps you can enlighten me as to when any Christian first started to question her perpetual virginity?
"But even if we assume it to be right, what you're saying is that we should let our opinions overrule the plain assertions of scripture."
Ah, but your claim that it is the plain assertion of scripture is only your opinion. Why should your opinion have more weight than 2,000 years of consistent Tradition?
Going by that idea, I could make up a tradition that says Jesus was a one-legged homosexual vegetarian, practice it for a while, and then say it's true based solely on the fact that some people believe it- regardless of what the new testament says.
Furthermore, it was tradition for thousands of years that said the Earth was flat. Boy, were they wrong.
First of all, it is useless for us to argue, seeing that you believe that tradition has as much weight as scripture. I also am assuming that you believe the apostles handed down their authority in an unbroken line of succession through time, which I deny. For two people with such differing points of view, it is useless to argue unless we come together on the subject of Authority, which we will probably never do.