I'm a Christian. It seems reasonable to me that the current thinking of the age of the universe (~14 billion years) and the earth (~4 billion years) is correct. It seems reasonable to me that the evolutionary theory is at least mostly correct. I believe God created everything, and this does not contradict the prior statements.
I really dislike young earth creationists expounding their views publicly. It gives people the false impression that one cannot be a Christian without thinking the Earth is 6017 years old, or whatever figure they're on these days.
That's not the point. Just as Pope Francis has recently expounded that the Catholics should concentrate on the love, mercy and salvation aspects of the Gospels rather than the continual harping on about homosexuality, birth control and abortion, so Christians in general should concentrate on the key message rather than getting swept up in an argument that is more likely to turn people away.
Sure, if you want to believe an alternate view of the age of the stuff around you, go for it, but please don't condemn others to missing out on their salvation by your stubborness.
Rant over. The Lord bless you and keep you all. :)