Here you go:
http://www.youtube.com/user/SharonSchamberNet
on the right under uploads, click on 'see all'.
Which downloader do you use? We use one called Youtube Downloader and it has changed so much I'm not happy with it anymore.
As for downloading, yes it takes up room on the computer, but if I download videos I can watch them away from home. Also, our connection is slow so if I want to watch on youtube again, I have to wait for what seems like forever for it to load before I can watch it, PLUS some videos on youtube just stop mid-video and won't continue at all for me. I started downloading back when I was on dialup and still do for videos I think I'll watch a lot.