For the same reason we make New Year's resolution. It's an expectation, a goal, if you will--- that we make to try to do things that we are too lazy to do now. ;D
It's like the presidential speech... he gives this list of things he will make better, but he doesn't always do those things, but he wants to. He wants to be a better person. In some cases, they feel they will be better by just saying them instead of actually doing them, but we just want to make ourselves better people. We know that we are not perfect, and we try to improve it because it irritates us that we need improvement.
Your baptismal promises mean a statement you say for your child (or if you get baptized when you are a adult you say them your self) and states that they are children of god.
Your Baptismal promises.
The parents of the child.
Baptism makes a complete change in a person's soul making them into a child of God who can worthily praise God and make it to heaven. That change happens even if the child is an infant and does nothing himself. Once one is older one must sort of "claim" their baptism and live according to the promises that were made at that time. So, in a very real way, renewing one's baptism would be making the graces received real in the present. Everyone at Mass renews their Baptism at Easter as the priest leads them thorough the questions and answers from baptism and then sprinkles them with the new holy water.
Yes, in the Confirmation Sacrament, you renew your baptismal promises made for you as a baby. You invite the Holy Spirit to strengthen your spiritual life. In addition, the Bishop lays his hands on your head to confirm (witness) the promises you've made as you enter young adulthood.
The Paschal Mystery is that Jesus was crucified and died and is risen and ascended into Heaven. That is the second Baptismal promise.
It is used for Baptism & for reminding us of our Baptismal promises.
Roman Catholic AnswerA copy of the renewal of Baptismal promises is at the link below. These include renouncing sin, Satan, evil, renewing one's faith in everything in the Apostles Creed
You renew the baptismal promises made by your Godparents for you at Baptism. You are, basically, 'confirming' those promises and your own desire to be a Catholic.
In Baptism we reject sin, evil, and Satan.
Baptismal promises renewal.
At Baptism, the child's parents & godparents make the vows. At Confirmation, the young person makes the vows for him/herself..Catholic ChurchIn the Catholic Church, Confirmation is the second of the three sacraments of initiation: Baptism, Confirmation, and the Holy Eucharist, all of which are given at the same time, shortly after birth, except in the Latin Rite, in which they are separated. Thus the baptismal promises are an integral part of all three sacraments, but the sacrament of confirmation is just the strengthening of the Holy Spirit to live out those promises. In all but the Latin Rite, the confirmand is a newborn and much too young to "renew" the vows for himself. So the Baptismal promises are integral to all three, but the specific action of Confirmation is the strengthening by the Holy Spirit to live out those promises.
The renewal of your baptismal promises at confirmation is very important as this is what you need to live a Christian life.