I gather you never ride when it's chilly and you might need a vest or jacket. Or when it's blazing hot and sunny and you might need more sunscreen. Or where there might not be a 7-Eleven where you need it.
DH and I sometimes ride with folks who start out saying the same sort of thing. Sooner or later we'll hear something like: "Oh gee, I have no room left in my pockets for this vest, would you mind carrying it in your bag?" or "Mind if I use your pump?" or "Got a tube I can borrow?" or "Can I have a squirt of that sunscreen?".
We make lots of friends on rides like that.

Part of why we tend to go out more on our own nowadays, taking care of the masses gets a bit old.