Sister salvation, many do not believe we need one, I personally believe all believers should have some protection (Luke 22:36-38!!). Jesus told his people to buy a sword, why? Because if another person is in trouble, YOU can help them!! Peter had no problem cutting the ear off a soldier, and Jesus knowing he would do this sure did not stop him before he did it! (John 18:4-11!!)
Jesus did not rebuke Peter, he just told him that is enough. SO!!!! That is why I carry a weapon, I am trained, and can help another, and have!! I respect those who do not own protection, but we all have different ministries, and we need all in the Body of Christ.