In many states if you die without a will all assets go to the state. That alone is reason enough to do estate planning.
also estate planning can eliminate estate taxes in most cases. That will depend on your location.
Just because you have a will does not mean that all is taken care of. As laws are changed your legal docs. need to change.
That's just not so.
If you die and are single, and die intestate, and have no traceable living kinfolk no matter how far removed... maybe.
But to state if someone dies without a will within some states, the estate goes to the state, is just in error.
The far, far worse thievery is known as the Estate Tax, or Inheritance Tax.
