Thank you for the opportunity of answering your questions about my religion. I've really enjoyed reflecting and thinking about them. It's also been challenging to actually write the answers down on the blog instead of answering them verbally.
I guess it would be more accurate to say that a child doesn't need to be baptized BEFORE the age of 8. There are many individual circumstances where a child may not be ready to be baptized at the age of 8.
Since our Savior, Jesus Christ, was baptized and he is perfect, there are more reasons that we need to be baptized than just to receive a remission of our sins. Jesus himself was baptized to fulfill all righteousness. Baptism symbolizes death, burial and resurrection and can only be valid when baptized by immersion by the correct priesthood authority. It is clear that John the Baptist baptized in that manner. By being baptized Jesus obeyed the law himself and set the example for all mankind.
"And Jesus, when he was baptized, went up straightway out of the water; and, lo, the heavens were opened unto him, and he saw the Spirit of God descending like a dove, and lighting upon him: And lo a voice from heaven saying, "This is my beloved Son, in whom I am well pleased."
Baptism by immersion has several purposes. It is for the remission of sins, for membership in the Church and for entrance into the highest degree (Celestial Kingdom) of salvation. For baptism to be complete, the laying on of hands for the gift of the Holy Ghost must be conferred by someone with the power and authority from God (Priesthood).
Baptism is the introductory ordinance of the gospel and must be followed by baptism of the spirit in order to be complete. Baptism is not optional. Jesus said a person must be born of water and of the spirit.
You can click on the label: confirmation of the gift of the Holy Ghost below and then on the comments to read Diane's comments and personal account of her baptism and the laying on of hands for the gift of the Holy Ghost.