Through the water connected with God's promise, we participate in Christ's death. What's more, we participate in Christ's rising. It is viewed as an ordinance, a divine command that must be obeyed. It is a symbolic act on the part of a person, rather than a sacramental act on the part of God. Gift, promise, forgiveness of sins, new life, and salvation, none of which are contingent upon the fervency of my faith or the intensity of my feelings.
Infants have nothing to do with their Baptism.
They can only receive it. The same is true of grace. It is God's gracious washing that summons us to decision and action. We can't just bask in our Baptism. We are called actively to affirm our baptized status as forgiven sinners, dying daily to sin and rising to a life of sacrificial love in the power of the Spirit.