Many Protestant denominations do not think that infant baptism is appropriate because you are supposed to be conscious of what you are affirming.
Well, what about sudden death in battle or falling into delirium from infection and then passing away without a chance to consciously repent?
It seems a little cruel that you go to hell because you didn't get a time-out to repent or passed away with dementia.
Insisting on a literal interpretation of the Bible while diminishing the opportunities for the gift of salvation seems a little odd to me.
The idea that infants are not baptized because is because true baptism is baptism of the Holy Spirit in a conscience act with the penitent. That is a parallel of how although John “baptized” Jesus, it was all truly and act joined by the Holy Spirit. It was not the “water”. The water is only symbolic of the Holy spirit that flows like water throughout creation.
And, nothing implies that the infant not baptized is going to hell - NOTHING; because it is by the grace of G-d, not ANY ceremonial act that we are saved.