I'm with you on this one topic. Jesus Christ, our model and savior, waited 'til full maturity to be babtized.
Anyone that hasn't made it through puberty, who's in the view of many states and countries hasn't reached a level of maturity to drink alcohol, or even to hold a driver's license, such person is not fit to make such a strong decision as baptism in any faith!
In this regard, anyone baptized prior to a full mature age, is equivalent to the practice of baptizing infants.
Kids don't know what the heck they're doing! They're just doing it to please their parents, or to make the brothers at the KH proud, etc.
DY