Updated our original 1965 will on Quicken Willmaker several years ago... also did the Health Directive, and ran through the steps of a trust, but didn't complete that as I don't think it was applicable in our case.
We had two neighbors witness the documents at our bank, and filed it with our county clerk.
The exercise of going through the steps led to a better understanding than what I had before.
As of today, I feel confident that we're covered. All of our kids are beneficiaries and have looked at the will. We wanted their approval before we finalized. It all went very well, with everyone in agreement about the distribution, and with the son we appointed as executor. All of our kids and their wives are very close and we're always open with them about our finances.
If we see a problem with finances or health on the horizon, we'll bring the current will to an attorney for verification. In the meantime, some peace of mind in having spent the hours in developing our wills, directives and POA.