We aren't talking about counting. We are talking about indexing.
Most programs don't need numeric indexing. They can either treat indices as opaque keys or they can use a foreach loop to avoid touching indices at all (or friends like map, filter, zip, and so forth). Even in an old language like C the only place indices usually matter is in the first line of a for loop. But sometimes you really do need numeric indices, and when you do zero-based indices are almost always cleanest.
Just think of how gnarly a flat 2D array would be if you had to use one-based indices. Gross!
Most programs don't need numeric indexing. They can either treat indices as opaque keys or they can use a foreach loop to avoid touching indices at all (or friends like map, filter, zip, and so forth). Even in an old language like C the only place indices usually matter is in the first line of a for loop. But sometimes you really do need numeric indices, and when you do zero-based indices are almost always cleanest.
Just think of how gnarly a flat 2D array would be if you had to use one-based indices. Gross!