Catholics are told they will go to hell if they are bad.
It's one thing to tell children that there's an unseen place called Hell that they might go to someday if they're really bad, but it's another thing to tell them that without a doubt, the very world they live in and see around them and the people they see everyday (including their unbeleiving fathers, uncles cousins etc) are going to turn on them and hand them over to the authorities to be tortured and will themselves later will be killed by God.
It's easier for kids to mentally block an imaginary place like Hell if they need to, but it's another to block out daily feedings that the world they live in will soon be destroyed but only after there's been a horrible time period where the will likely be tortured and if they don't survive it they might be resurrected but they will never marry or have a family of their own.
There are worse forms of child abuse out there but putting the burden on children of saving the public from pending destruction, making them go from door to door selling books and magazines with untrue information and pressuring them to give up things they are interested in so that they can save others from a cataclysmic event that will be happening any day, is definitely not healthy and would never be recommended by anyone who has studied child psychology.