Creating an estate plan or a last will gives you control over what happens with your assets when you die. The same process also helps provide you with peace of mind by making it easier for you to know that your family will have the resources they need when you die.
You will probably put a lot of careful thought into who gets what and why. If you have a trust as part of your estate plan, you may even choose to put rules in place about when a beneficiary accesses those assets and how much they can withdraw at any given time. You can prevent people from using estate assets wastefully or while they are too young to appreciate their value.