Having a tailgater right behind you on the highway makes you feel nervous, and it should. It's very dangerous. It's also something that many drivers do accidentally because they have no idea how long they actually need to stop in an emergency.
When doing your estate planning, remember that you have to update that plan periodically. Common times for an update include when you get married, when you get divorced, when you have a child or when someone named in your will passes away.