Zombies

We all know it's coming. The zombie invasion.

Are you prepared? What will you do if a family member or loved one turns? Would you be able to take them out without flinching or would you be unable to do so?

At what point would you consider your family member or loved one gone? At what point between that single bite, and a walking corpse does this person cease to exist?

If you believe in souls, would the soul still be in the walking corpse? If you don't, has the body/personality of the person sufficiently changed so as they could not be considered the person they used to be?