[goodplay]

One good reason for me personally is to insure future availability. As I type this, there are a couple of videos in my watch-later playlist that have been replaced with "video removed".

[muntoo]

My Watch Later is like 100 videos long. Ain't nobody got time for that.

[jerf]

youtube-dl can download lists of videos.

It also automatically doesn't download things you already have, so it can be used periodically to sync the list if you want.

It only really matters if you expect videos to go down, but I also have my small collection of "videos that were obviously going to be taken down".

[dawnerd]

This is one of the best features (apart from channel backups).

I think because of its name people also don't realize that youtube-dl works for LOTS of other sites and it's relatively easy to add new sites in as well.

[morganvachon]

You're posting on HN, I would think you would find a way to automate it. ;-)

[goodplay]

I believe youtube-dl is capable of downloading entire lists, but I don't know if the watch-later list behaves as a normal list. One way to find out.