Man, this is so sad. True, but sad. For me, I guess it'd be the morning my father died. He'd had a cold, we thought, but around 2am he was having such an awful time breathing that my mom took him to the hospital. I was 13, my siblings 10, 5, and 4. I don't remember being worried about him. We all went to bed, and my mom came home around 6am to get us up and off for the day. The hospital called at 8am to say he'd died. Turns out he had widespread cancer. I am sure before he left for the hospital I hugged him, but I don't really remember it clearly. If we'd known how sick he was, I know I'd have held onto him for as long as I could.
A happy note... DD used to play with my hair while nursing, twisting it around in her fingers. I always thought of how I'd miss that once she was weaned, but SURPRISE! She still does it! I can always tell when she's had a bad day, is stressed, etc. She'll sit next to me and twirl my hair on her finger, just like she did when she was a baby. Makes my heart warm.