LETTERS???
I can tell you that I don't feel that they will ever have to read them, but that I will have letters for my family. My husband died of leukemia (the curable kind) in 1998 and never felt he would need to write the letters. I even suggested it once. Well, our kids wish now they had something like that, and there's nothing I can do about it.
****Do it for your family.****
Show them that you care. That's all I can say. It would have made a huge difference for my son who was his sidekick, and now is forgetting a lot of things about his dad. And my daughter was only 1 yr old when daddy died. I can't tell you how nice it would be for her to have something from him now that she is 8.
In a way I feel like it was selfish of him to not write the letters. He's gone, and the family is left with the grief. I don't mean to offend anyone, but trust me if you were the loved one and your family member died as a result of this surgery, you'd want the letetr, and it would be highly important to you.