"For all we know we may never meet again." A song I like but saddens me. Would you like to know when it's the last time you'll see someone?

I sure would. I could say how I felt and how much I've enjoyed knowing him/her and whatever else comes to mind. Saying goodbye I think could help ease the loss. Whether it's a loved one or just someone you like a lot.

All-too-often people just disappear from our lives without any notice.

I guess I'm in a melancholy mood. Apologies.