Great examples of scenarios when you would be seperated from your pack, or simply wouldn't want to take your pack off your back, gang!

Here's another: When I hike with my son and/or the Beaver Scouts, somebody always seems to need a bandaid or hand sanitizing. I don't want to stop and open my pack for their tiny boo boos and oopsies, so I always keep a small FAK and mini purelle on my belt or in a pocket, along with a water bottle in a cargo pocket or fanny pack.