The original post said, "(YouTube is) a store of culture almost. A wealth of information and video would be lost, like rare videos which are only on youtube."

The original post said, "(YouTube is) a store of culture almost. A wealth of information and video would be lost, like rare videos which are only on youtube." Archiving a store of culture and almost infinite rare videos is definitely not a straightforward and easy solution. Yes, you can save few interesting videos locally. But, that's not the point of the original post.