It does seem pointless in…
It does seem pointless in your scenario; however, for many it is a nice grab-and-go option when you have a friend or family member stranded calling for help. I go outdoors a lot too, outside of a cell signal, but I also carry a tiny 2-meter handheld or shortwave radio as a reliable backup. Not just for a battery issue, but also because vehicles left at trailheads are often damaged or stolen.
It is a judgement call in any case.
Thank you for the input.