if `i` ever gets modified inside the loop, and skips 0 (e.g., got decremented twice when it is at 1), then you might end up with an infinite loop?

Usually, this won't happen of course, but because `i` is not declared inside a for-loop, it must have been declared outside, and thus might even look like a regular variable that could be used by some "clever" coding to multipurpose it!

In any case, it's a niche worry i have, so i usually don't do it if i know there's a for loop that would do.