Never allow anyone to lay a finger on you. Never. There is no excuse or reason that warrants forgiveness of such an action. It is like the saying "give them a hand and they will take an arm." Once you set a precedent of forgiveness they will start one of abuse. The finger is not only a physical one as there are dozens of ways to hurt another person without having to strike them physically.
A house is only as strong as its foundation. If you build the house of your relationships, friendships, and the like upon a foundation that is rotten the house is bound to come crumbling down. The storms that are sure to come will not allow a home with a rotted or otherwise weak foundation to last.
In nature the storms consist of tornadoes, hurricanes, and the like. In your life it is your mother's wrath and your father's rage. This earth has not seen fury like we would unfurl upon those who wish to hurt you. We will raise you as best we can and may God grant you wisdom to make good choices and keep you from bad company. As you get older I will tell you more as to why things must be so.