Everyone should consider the legacy they want to leave at the end of their lifetime, whether they have children or not. In fact, having no heirs to leave your estate to can mean that it is even more important to plan out your estate. This is because it can be significantly more challenging to get your affairs in order.
If you do not have children and if you live longer than your spouse, the assets that you have at the end of your life will be difficult to distribute. Additionally, you may be unsure whom you would like to leave your estate to at the end of your lifetime.