I wrote a long reply earlier and lost it when the page wouldn't load. I had to be at a wedding so didn't have time to re do it. I can argue this subject until the end of time using The Bible as a base because I know the Biblical stand. No one has given a Biblical explanation here for the simple reason there isn't one. I will write more when I have time.
What you do is your business, but as a Christian my heart breaks that people are being denied access to God by men who think putting on a collar makes them something special (I can count on my hand and point it out with a finger how many times I've seen my Grandad in a collar and vest. I can even remember the first time I saw him like that!) These men, in the name of the god I worship, men who are supposedly educated in The Bible are putting barriers between people and God.
When Jesus died the curtain to the Holy of Holies ripped from top to bottom (try doing that, I'm a fashion designer and worked in a soft furnishings studio and I'm telling you it doesn't happen) because no longer do we need anyone between us and God. Jesus does that! We can go straight to Him. By putting ceremonies that have no basis in The Word we are making obstacles to God where there should be none!
Being a Christian is not about whether you have fulfilled rites in front of people. It's about a one on one. Abba, a Hebrew name for God is lit. Daddy! Why do we call Him Father? He's not, He's our Daddy. But we have to let Him be, for ourselves.
One of the worst things that was ever said to me was a friend at school who, when asked what religion she was said "I suppose I'm a Christian. I don't want to be. I don't believe in God but my parents christened me so that makes me a Christian"! How sad! Why did no one tell her parents the way to God? "I am The Way, The Truth and The Life NO ONE comes to the Father but through me."
In my Church they would have been taken somewhere comfortable, someone would have made a cup of tea and there would have been no question about kicking him out. I've seen worse in Church because where the Spirit dwells you can be sure that the Devil will try to attack.
Please don't think that my views of christening are personal against parents, they're not. They are against the people who should know better because I do know better and it angers me that people are giving Satan an easy time and calling it "in God's name".