I agree with Stringsinger. YouTube, to me, is a marvel, a door that almost inexplicably opens to vast expanses. When I want to re-hear something from years back, there it is. Most often not visual but audio is what I'm looking for, most of the time.

And I use it for contemporaneous things too. I would hate to be without it.

As for the comments- rude or otherwise - I rarely open them. If I found someting disturbing or unhelpful I would simply close it or go on to something else.