So often when things get busy, updating our Will is neglected. It’s a case of the urgent things you have to do take priority over the important things.
You need to have a valid Will if you want your estate to pass to your descendants or friends in accordance with your wishes. If you do not have a valid, up to date Will, then your estate will be distributed in accordance with the Intestacy laws, or in accordance with an old will. This may not be what you want.