Well the simple answer is that by taking this line you are arguing that science has shown your religion to be false.
But I think the problem is in your theology.
Considering the following facts.
1) According to Christian doctrine the unoverse is the direct creation of God
2) The empirical evidence shows us a universe billions of years old. And that evidence is observations of the universe itself.
So if the universe is much younger then God HAS deceived many, many people.
In contrast according to normal Christian doctrine the Bible is not directly createdby God and telling us the age of the universe was not the purpose God had in mind for the Bible.
So it seems to me that a universe only a few thousands of years old is worse for Christianity since it proposes that God created a great deal of deceptive evidence - whereas if the literal reading of the Bible is wrong on this issue the worst that can be said is that God did not intervene to prevent an error in the Bible.