Touching.
In the scenario you probably wouldn't need to weapons to kill people, but would find them quite useful against hungry feral animals. And for food.
As far as dealing with the sudden demise of loved ones, that would be the hardest. Hard to think of a reason to stick around in that case. I still find myself talking to my sister, deceased 7 years, and roundly cursing my brother-in-law for dying a year ago. And I have a lot of folks in my life now, still, yet. I know that people like me sense themselves through a connection with others. It's knowing and trusting those connections which allow one to spend a lot of time alone without being lonely.
Arf