Here's a thought: Christians believe a lot of different things when it comes to the Christian faith. Some are worth a strong debate and others not worth the time. We see through a glass dimly and with so many views, we could all be wrong or only one view be right. I trust God more than I trust myself so I am cautious about some claims made by Christians (including myself).
I believe in a very old universe. I don't believe in a 10,000 or whatever age of the earth. I believe it's likely that there was death before the fall. Plants lived, they died. Of course I could be wrong but I'd have to fake an alternative view. But so what? I'm not all knowing and have to go with what makes sense to me at the time. I used to believe in a young earth. I'm still open to that but it would take a lot to bring me there.
Do I believe in Evolution? I don't even know what is meant by that question anymore. To me it's a meaningless question unless I know exactly what is being asked. Evolution means different things even to scientists.
The bottom line is that as Christians, we ought to have a set of core beliefs that are clearly taught in Scripture and that we share.
"In Essentials Unity, In Non-Essentials Liberty, In All Things Charity"
From the following article: "Often attributed to great theologians such as Augustine, it comes from an otherwise undistinguished German Lutheran theologian of the early seventeenth century, Rupertus Meldenius."
http://www.ligonier.org/learn/articles/essentials-unity-non-essentials-liberty-all-things/
This is worth reading and chewing on a bit.
Christians (not all) fight too much over silly things. We often don't discern the difference between what's important and what's not. I'm told I don't honor God's word because I believe the universe is billions of years old. That I'm told this by fellow Christians. They are wrong to say that. I don't think it's that important of a view. I hold it because it makes sense.
If someone believes in the Darwinian model of Evolution (there are other models) and they claim to be a Christian, who am I to say they are not? Can they be a Christian and also be wrong about things that perhaps only God knows? That would be all of us. I chiefly among them.