This is new. When my son was in the hospital I didn't feel this; obviously because I was too frantic with worry. Now that he's spending a week fishing with his grandparents, the worry is at minimal levels and I've discovered my house feels too large for one person. Only one year to go before he heads off to university and I'll be alone ALL the time...very strange. My garden is probably too big for one person too!
It occurs to me that I would have been well suited to be a colonist. Why are we still stuck on one planet?