Now, mass unemployment simply cannot be solved via education - the parable of the 100 dogs and 92 bones was discussed here not so long ago. (The original link was this one, I believe: http://alittleecon.wordpress.com/2013/06/19/the-parable-of-1...)
However, having a good education and credentials does increase the chances that you'll get one of the 92 metaphorical bones, so of course it makes sense to get one. But this only really works reliably if your education and your credentials are better than those of your peers.
This leads to an arms race which explains why degrees are become simultaneously worth less and more important.
Edited to add: The effect on degrees is actually old hat already. These days, it's about an inflation of unpaid internship to spice up your CV, at least for those in non-technical fields.