Downloading a video from Facebook allows you to view it offline without an internet connection, making it convenient for travel or situations where you don't have access to the internet.
Downloading a video instead of streaming it can save your data usage, especially if you plan on watching the video multiple times.
Streaming videos on Facebook can sometimes be slow or experience buffering issues, especially with slow internet connections. Downloading the video eliminates this problem and ensures a smooth viewing experience.
Downloading a video from Facebook allows you to keep a copy of the video on your device, even if the original video is deleted or becomes unavailable on Facebook.
Downloading a video from Facebook makes it easier to share with others, as you can simply share the file instead of sending a link to the Facebook page.
Some Facebook videos may be accompanied by advertisements, which can be annoying and disruptive. Downloading the video allows you to view it without any ads.