Why are children physical and emotional abused?

It all comes down to the Golden Rule: Treat others as you would have others treat you. In other Words, if you beat someone, you need to expect and accept that someone will beat you.

Because beating hurts.

Because if your child goes to school and tells a teacher about it,then the teacher will call DCF and your child will be taken away to foster care and you could get arested for assulting a child

I have a good answer.

Kind of.

There are so many reasons why parents shouldn't beat their children- assuming those parents want their children to become healthy and happy and what not. If the parents want their kids to suffer- beating them is probably a good idea. It's hard for me to explain why kids suffer when their parents physically abuse them. For one thing it causes the abused child to find ways to cope with the issue, and often the child adapts behaviors that don't help to create a good life, such as becoming afraid of people. There's a relatively complex psychological explanation, but it's actually a loaded question- as in there is a lot of room for discussion of the answer. So if you really want a decent answer for this question, read some books. Maybe a red book I've looked into before called Bradshaw on: The Family. Or some other books about psychology and childhood.

Additional answer

Firstly, the third answer from the top does not suggest why it's wrong to beat kids - just that you don't want to get caught doing it!! Weird!

Secondly, I've not seen the slightest evidence that slapping a child is bad for it. When people talk of beating they make it sound as though you are setting about the child with clubs. That IS bad. But a slap ain't.