I wasn't really brought up a catholic, my parents used to go to church only for weddings and funerals and were in strong disagreement with many catholic practice and beliefs.
I don't think my beliefs would be considered appropriate by a strict catholic and tbh I don't care. I also hate all the fuss about christening parties as I thought that the real sense of what being christened means, was lost in the middle of wedding like paraphernalia.
However, at some point in my life I had a very strong faith, and that helped me to overcome a very very difficult time, but years after, I also left the church disappointed with the attitude of some very strict catholics in my community.
So, even though I do not go to church anymore, pray, and find it difficult to believe there is a God somewhere out there, I wanted to christen my son so he finds it easier to return to that faith/become active in the church if he so wants in the future (as I did). If he doesn't, it is his choice.
BTW DS christening was a very discrete affair, it took place in Sunday mass, no special arrangements for it. It was done in the strict sense of the meaning, being welcomed by the church, no silly clothes, parties and we only let know a few friends it was taking place. My inlaws who are atheists not religious but kicked off at not being able to be part of the traditional fuss a christening involves in Spain, were mad at us. But tbh, if I had to do everything again I would do exactly the same. It was a lovely day with our best friends as godparents, and a handful of friends who cared to attend at a very short notice.