The origin and foundation of Christian Baptism is Jesus. Before starting his public ministry, Jesus submitted himself to the baptism given by John the Baptist. The waters did not purify him; he cleansed the waters. . . . Jesus did not need to be baptized because he was totally faithful to the will of his Father and free from sin. However, he wanted to show his solidarity with human beings in order to reconcile them to the Father. By commanding his disciples to baptize all nations, he established the means by which people would die to sin – Original and actual – and begin to live a new life with God.
In Baptism, the Holy Spirit moves us to answer Christ's call to holiness. In Baptism, we are asked to walk by the light of Christ and to trust in his wisdom. We are invited to submit our hearts to Christ with ever deeper love. (from the United States Catholic Catechism for Adults)
We are welcomed to the doorsteps of the other six (6) sacraments of the Church: Eucharist, Confirmation, Reconciliation, Matrimony, Holy Orders, Anointing of the Sick.
Bishop Donald Hying explains "why Baptism?"
https://www.youtube.com/watch?v=GBQaxJHFRyA
I understand that on the day of our child's Baptism, I will make a promise before God and the faith community to raise our child "in the practice of the faith." I know that means, among other things, that I must must be an example to my child by:
A Child must have one (1) practicing Roman Catholic godparent in good standing with the Catholic Church.
The Catholic Church requirements for Roman Catholic godparents according to Canon Law are: