[yamtaddle]

1) There's automation for the "deleting it" part.

2) Viewers understand that the video is only temporarily available, without your having to tell them.

[hotpotamus]

I see - I suppose my problem is that I see disappearing videos as a problem rather than a feature. What's even more annoying to me are the spots on youtube lists I've created over the years that just say the video has been removed, but doesn't even tell me what it was that is gone.