i ride on bike paths, long distances. not to many have a lbs near by.
i carry a new tube. tube patches,tire patches,tire irons and a mini pump.
you'll never know what you're going need to repair a flat. rather than wishing you have brought them with you. it's better than walking back to my car or phoning for help.
so i try to "cover my butt."
remember the boy scouts moto while riding far from home "BE PREPARED"