Do you prefer Fetch or Axios?

One of the fundamental tasks of any web application is to communicate with servers through the HTTP protocol. This can be easily achieved using Fetch or Axios.

The Fetch API is built-in most modern browsers and provides a fetch() method defined on the window object, while Axios is a specific 3rd party Javascript library you must install manually.

Which method do you usually use and do you think adding a library (around 4.4KB gzip) is worth it for the extra features it brings?