Lefty...I am so sorry about your grandfather. You have given me something to think about, however. I am 63 years old and still have a grandfather who is 106 years old and living by himself...still farming. I haven't seen him in years, as he lives in Oklahoma and I live in NY. I am fortunate to still have a grandfather. Both of my parents have died. I think I will call him right now.
We can't change the past or control the future. All we really have is this very moment. In this moment, comfort your family the best you can and savor the memories.
Everyone has said it well, and I am sorry about the loss of your grandfather. You and your family are in my thoughts and prayers.