Baptism is not just symbolic. It is salvific and was commanded by Jesus and His Apostles. You are free to your opinion, but please do not further poison the minds of the innocent with your thoughts.
"Corresponding to that, baptism now saves you—not the removal of dirt from the flesh, but an appeal to God for a good conscience—through the resurrection of Jesus Christ," - 1 Peter 3:21
"Peter said to them, “Repent, and each of you be baptized in the name of Jesus Christ for the forgiveness of your sins; and you will receive the gift of the Holy Spirit." - Acts 2:38
Now why do you delay? Get up and be baptized, and wash away your sins, calling on His name.’" - Acts 22:16 (note:Ananias' phrase "wash away" comes from the Greek word "apolouo." "Apolouo" means an actual cleansing which removes sin.)
There are many more references, but I pray you get the message.