Nor is an infant capable of eating on its own, nor taking care of itself, nor protecting itself. That's what their parents do. If taking care of the body is important, how much more important to care for the soul?
**G2G: For those of us Baptized as infants, our Godparents speak for us, and it is up to the baby's parents, Godparents, and fellow Catholics to teach them accordingly.
MM:Nobody can make that decision for you.**
Once again:
As we mature in our lives and our Faith, we actively make a choice to keep that covenant begun at Baptism for the rest of our lives, at which point, we make our Confirmation. We receive the Holy Spirit in a special way. We also, having been given a name at Baptism when others spoke on our behalf, choose for ourselves a name of our own. From then on, we shoulder the responsibility to live for God through the tenets of that Faith.
An infant cannot make cogent decisions and that is something that no one can do for him, even if they can take care of his physical needs.
As I said, they can teach him and encourage him in the right direction, but ultimately, the decision is his and always will be.