I don't think anyone here considers baptism a sin...I was baptized myself!
I just do not believe that it is the baptism that saves you! Jesus spoke of the Pharisees a lot, but that does not make them necessary for salvation! :roll:
Baptism is an outward symbol of something that has ALREADY taken place inside! Since it has ALREADY taken place, the SYMBOL itself is not necessary....important, but not necessary.