Lol. Read the title and started giggling. Family asks why I giggle, I tell them and they start laughing.
So yes. After losing everything, including the backpack I always have it with me. It's a hard rule - the moment I'm far from it, I need something from it.
The contents are pretty much everything I might need during an average day. Keys, vallet, medicines, a notebook and a pen, bandages, headphones, deodorant.
The worst was when it was stolen, while I was travelling, 3 hours before it was time to leave for the airport. Obviously my IDs, tickets, money, were all there.