Most code (and the effects of removing/refactoring it) are not that obvious at first glance. But I agree, if your code is as simple and self documenting as that

Most code (and the effects of removing/refactoring it) are not that obvious at first glance. But I agree, if your code is as simple and self documenting as that a comment like that doesn't add anything. But a lot of the intention cannot be expressed in code alone. This is where comments help enormously. It allows me to review the code and compare it to the writers (often me) intent and spot bugs or refactor if needed. Without it a lot of knowledge has to be rediscovered again.