The man who turned a gun on innocent kindergarteners and some adults may have only physically killed twenty some people, but so many more people lost their lives today because of that man. When someone you love leaves, it's kind of like part of you left too. Killing those people basically killed their loved ones too. You can't get over a death the way you can a break up, it just doesn't happen. No one should ever get a phone call saying someone they love has been killed, no one deserves to go through that much pain. When this man took a child, a wife/husband, a sibling, a friend, etc. he also took the people that care about that person's life.
Be thankful for what you have, because it can disappear in the blink of an eye.