Our accepting God is a personal conscious choice of the Father's will to draw any one that seeks Him unto the Son to reveal His Son to us so we can believe in Him to be saved as our believing in Him is a manifested work of God the Father.@GodB4Us Accepting God is is personal, conscious choice made by a sane, coherent person.
Babies and children do not have the age, mentality of life experience for that and a few kids who are ahead of others do not define the rest.
It's also logical that any underage child is not forever a baby or child but aged to a prime adult age and has the intelligence to match.
Will aborted babies find their parents in Heaven should they repent and follow God? Of course!
Will the abandoned babies and children who die do the same? Of course.
As Jesus spoke in parables but also lay terms then "child" and "babe" are not only referring to babies and children.
As a new Christian one is a babe or child as the Old is gone and a new person is "born again" remember?
People have used analogies throughout our history. It would be worse for someone to cause a young one to stumble as they are too young to fully understand.
One of the reasons why we are to give thanks to the Father in Jesus's name.