Comment by vessenes

I think it's a human thing. The Torah is succinct; The Talmud has a lot to say about it. For a large codebase, the comments would be huge, and also I think distracting.

In fact, as a former code auditor I can say that comments at times make bug finding harder -- they frame you up a certain way. I definitely preferred to audit without comments.

Anyway, there are definitely valid reasons. I think the commit log or dev notes files are generally preferable, especially when combined with good naming.