My sibling died unexpectedly this week. My parents died when we were in our twenties, and due to relatives either not getting married or not having kids, our family has dwindled to almost nothing. I have a few distant relatives, both in terms of relationships and distance, but I'm the last one of our family unit. Apart from the shock of losing my sibling, the PM, the funeral arrangements etc, I'm struggling with the fact that if I forget happy memories, they'll be gone forever. I have a partner but no children; I just can't comprehend that I'm not even 50 and I'm the last one left. How do I even start to comprehend this?