This is from my Dad. He feels, very strongly, that a time out punishment system is effectively telling DC that they're so awful you can't bear to have them near you and will lead to emotional problems and poor family relationships.
My parents were very loving, but also very firm with us. We were smacked when we needed disciplining, but never ever sent to our rooms/the step. Dad feels a short sharp smack that is quickly forgotten is far kinder than banishment. What do you think. (He is not in anyway advocating hard physical punishment, this was a slap of the wrist, legs or bottom depending on age, never leaving a mark)