I am proud to say... I am a Christian. Rare anymore, are you? If you don't mind me asking
I'm afraid that I've strayed from that path but I'll not deny that Western civilization is fundamentally underpinned by Christianity.
Oh, I've strayed from the path myself, trying to get back up. It used to be that way, but even Western civilization has strayed. 
Don't get me wrong, I still celebrate Easter and Chirstmas with the family. It's just that faith comes to me with great difficulty.
Believing or being faithful in the belief? I, personally, have been through too much and seen too much personal evidence. I won't force my beliefs though. I love Christmas btw. My favorite Holiday, what is yours?
I also like Christmas. I struggle, however with the literal belief in the core tenets of the faith. Is Jesus the sun of God and the messiah? Does the bible constitute a literal discription of creation?
I went through a time of that. I had some bad things happen, got PTSD but... I'm thankful, that's when I seen clear existence. It's times like that, I'm thankful bad (bleep) happened. I hope nothing else does though lol. 
Well far be it from me to criticize your Christian theology, believe or practice. I respect the faithful all the more having known how much of a struggle it can be.