Young people today don't really know what it was like going on a resource safari back in the old days...never knowing what you would find...using other people's footnotes to lead you on to more information...cussing under your breath at the lack of precision in some of the indexes, and at the lack of compassion at the cataloger who didn't use your keywords!
Yes, my kids were amazed at how much information is in the footnotes, bibliography, etc. The computerized library catalog spoiled them!
It's really annoying when you track down a source and it's in a foreign language, though! I'm reading a book now where half the sources are in French, which limits my opportunities for further reading. I can get through a poem or a brief news story in French, but not a history book!