You get this very nice linear execution birds' eye view which tends to be readable. Combine that with hoisting and you start with this big picture at the top of a file, and then can dig deeper into the smaller functions as needed, written in lexical order lower in the file.
Here is a very trivial JS example from a kata:
```js function main (numbers) { return Array .from(numbers) .sort(byGreatest) .slice(0, 2) .reduce(toSum) } ```
This is much more regularly written in languages with a pipeline operator, like Elixir, because you can pipe to arbitrary functions and operators (instead of being restricted to a method chain).
(JS/TS will get there eventually, if the TC39 committee can ever finally commit to the proposal.)