Worst thing a parent could do to a child

The worst thing i think a parent could do to a child is beat them. most parents beat their children for all the wrong like bad grades if they get in troble at school and etc... i feel that a parent shouldnt beat their kids because that will only make them do wrong. when a parent baet their child they are not showing them the right thing to do, they a just putting fear into them. if i were a parent i would just put my child on punishment for 3weeks. and some parents just beat their kids for no reason and that is wrong.