Christians talk about lots of topics - that doesn’t mean that all of them are equally important..
LOL!
The doctrine of Perpetual Virginity doesn’t impact salvation at all and is a lesser topic.
TP is correct that this is a lesser topic compared to the central theme of salvation
We hold to the belief that was taught to us by Jesus Christ through the Apostles.
We do not change it by vote to allow gay marriage or take Harold Camping's words, we don't think we know better about the Early Christians than they did themselves.
As JVette correctly pointed out the Eucharist matters and it is only in the Apostolic churches that one can receive the Eucharist. The Bread of Life which is Jesus and the Cup of the New Covenant which is His blood.
It matters and it is of the utmost importance because one risks eternal life with the rejection of Christ’s church and His Body, Blood, Soul and Divinity.