Liz Boltz Ranfeld explains why she and her husband Don’t Spank Their Kid in a well thought out post. She has 5 main reasons which are fleshed out and explained.
1) Her child’s personality
3) Occasional spanking so often turns into frequent spanking.
4) She’s not allowed to hit another adult; why should she be allowed to hit a child?
5) The scriptural support for corporal punishment is disturbing.