None of my children are christened because I am an atheist, yet I I have attended church service's weddings etc, I did feel a bit of a hypocrite when i was asked to be a god parent to my nephew and part of the service was to renounce the devil, but I did it out of politeness to my Brother.
I think most people do it for the occasion rather than what it actually stands for.
I have a friend who has become a catholic just to get there children into a better school, she has even asked us for advice on what to say in confessions, (yeah confess that your religous belief is a sham to further your children education can't see that one happening!!)
My mother-in-law still keeps asking if I have any intention of getting my children christened......after 7years the answer is still NO!!
My grandfather was definaltey not a hypocrite and when he died one of his wishes was that his body not to be taken into church (as he had never been to church in his life) so my Nan, Bless her, arranged a church service and my granddad's coffin stayed in the hearse outside while we went in to listen to the service, the off to the cremetorium! (oh and don't make the mistake my brother made and ask "whats that burning" a the crem)