node.js command line tool

I am writing my very first command line tool with node.js. I'm familiar with the concept of async io and understand the benefits of using it. I am wondering however, since this tool will do the following:

1. Perform some FS operations (e.g. create folder, write to some files)


2. Make a network request (e.g. download some stuff into this folder)


3. Produce a result (meaning a bunch of files)


4. Exit

Should I really be using all the async versions for these methods? for instance mkdirp() is also available as mkdirpSync() (from the fs-extra module), so the real question is:

Why do I even have to bother using async functions in a program that is due to terminate upon completion? and has no real impact in case the application thread is blocked?

Thanks.