There are many potential reasons.
For quotation, such as if you're partaking in a video conversation or referencing another video in yours (which is allowed under copyright law as "Fair Use").
Or just because you feel like playing it in a decent player instead of a browser, or if you want to distribute them somewhere else. There's plenty of videos on YouTube under a Creative Commons license which explicitly allows for that.
Also you might foresee being offline for a while, in which case you might want an offline version.
That's just what comes to mind right away. I'm sure there are more reasons that others have.
Kind regards,
Helgi Hrafn Gunnarsson
On Mon, Oct 17, 2011 at 3:18 PM, John Lange
<john@johnlange.ca> wrote:
I'm just curious, why do people need to download youtube videos ?
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John Lange
www.johnlange.ca