One of my husband's and my dearest friends, PJ King, said that longing is good for the soul. I was in the mood to play Socrates and commented that I needed clarification between longing and pining, for the latter is negative.
The dictionary makes no distinction between the two, he said, and reasoned that longing reminds us of Heaven, that the grave is not our end, earth as we know it is not in its ultimate form, and though we know God now, we will know Him fully when we see Him in His glory in Heaven (once again, I refer to 1 Corinthians 13:12).
Some days, I find myself longing like this: Staring off into the void, wishing for an indescribable something that I know has been and will be again. This yearning--this relentless itch--is the reality behind our very meaningful childhood dreams of knights and princesses and kingdoms. It's the truth that draws us, inexplicably, to hope and endurance when wretched despair chokes out the light.
We long for more in life because this life is not our final destination. We dream of Heaven because we were made to dwell with God.