"It cannot be proved by the sacred Scriptures that infant baptism was instituted by Christ, or begun by the first Christians after the Apostles" (Martin Luther, Vanity of Infant Baptism, Pt. II, p. 8).
Despite this statement made by their founder, Lutherans continue to practice and defend infant baptism. What can be proven by the sacred Scriptures is that baptism was administered to penitent believers who had confessed their faith in Jesus (Acts 2:38, 8:36-38). Neither one of these things can be done by infants. Baptism was administered for the remission or forgiveness of sins (Acts 2:38, 22:16). Infants have no sin, and thus do not stand in need of that which is provided by baptism. Scriptures also teach that baptism is an immersion or a burial (Acts 8:38-39; Rom. 6:3-4; Col. 2:12). Those who practice infant baptism practice sprinkling.
Regardless of how emotionally attached one is to a belief or practice, if it cannot be proven by Scripture, it must be abandoned. Have you been scripturally baptized?