Living wills are almost a must. They cut the attorneys out of sharing the estate almost totally.
Otherwise they take 6 + % of the estate, or work on an hourly basis for 2-3 hundred dollads an hour.
Living wills have nothing to do with it. They deal with medical decision-making.
You're thinking of living trusts, and they are NOT what they're cracked up to be. And they're often just as lucrative for attorneys, if not more so, than a traditional estate plan.