0-based indexing is an artefact of pointer math. Modern languages don't treat arrays as a pointers to their first element. So, it is still with us only because almost no language designer decided to challenge existing convention.
I see 1-indexing as an artifact of a lot of linear algebra texts, whereas 0-indexing is more popular in analysis. Julia just wants it to be easier to directly copy formulas from publications.
I also think it’s blurry as to whether mathematicians and programmers see indexing numbers as merely indices or richer numbers.
