Quote Originally Posted by indigoiis View Post
How about this. Let's say you bring an extra tube on a long solo ride, and during that ride, due to an unfortunate event, you get a flat and use the spare tube. Then, about eight walkable miles from home, you flat again. Now you've got no choice but to walk eight miles in shoes designed not to be walked in.
You should have a full patch kit, a pump, and the skills to use both (and other related equipment) to begin with.

It's indeed a matter of safety.

One single extra tube just doesn't do the trick.