Role of parents in baptism (2)

Ronald Cauchi referred to the case of the young couple who had a civil marriage and who were told that the baby would have a private baptism ceremony. He asked what the reaction of the child would be when he grows up and learns about this. I would think that it would be more likely that the child, once he becomes a mature adult, will turn to his parents and ask why they felt that one sacrament, baptism, was worth having while another, matrimony, was not.

Can we consider ourselves as being mature members of the Church, consistent in our choices, and at the same time feel that we can pick and choose only those sacraments which please us while discarding others?

During the baptism ceremony will we feel comfortable when we have to answer in the name of our child the questions the priest puts to us, including our belief in the Holy Catholic Church and our intention to bring up the child in the faith while following God's commandments as taught by Jesus Christ? Should we teach our child later on, maybe before he receives the sacraments of communion and confirmation, that we believe that only some sacraments are worth having while others are not? Would not this then be rightly called another sad case of being cafeteria or supermarket Catholics as Pope John Paul II used to say?