I am baptized because it is commanded (Acts 2:38; Matthew 28:19-20). Baptism is not an option. Jesus made it very clear that every person who claims to be a follower of Him demonstrates that through being baptized.
I am baptized as a step of obedience that demonstrates our love for Christ (John 14:21). Jesus said one of the ways we demonstrate our love for Him is doing the things he commanded. Baptism is one of those things.
I am baptized by immersion because it pictures Christ’s death and resurrection (Colossians 2:12, 2 Corinthians 5:17, Romans 6:1-4). The way I get baptized, by immersion, pictures Christ’s death, burial, and resurrection. In addition to sharing my story verbally, I share my story visually – the physical act of immersion is a picture that I was once dead in sin, but I have been raised to newness of life and am now alive to Christ. Baptism shows people outwardly what I have embraced in my life personally.