Tears of sorrow or joy

As I sit and think about life and how it's lived. I often wonder if death is final. I know not that answer. I wonder when we cry are we crying tears of sadness because that person is no longer hear or is it tears of joy. It can't be of joy because the mind reminisces of the past, because there is not longer a future. Are the tears of joy something that we hope for eventually. I have lost many people in my life and I do not recall ever crying tears of joy. Just tears of sadness.