Ignorance, or simply being unaware, is a good thing sometimes (you might even call it bliss).  But only if you're ignorant.  When you're ignorant, you don't know things, and you don't even know that you don't know them.  And as they say, what you don't know can't hurt you.  But as soon as you find out, you're no longer ignorant; you're aware.  And once you're aware of your ignorance, you can't go back.  You can't un-know something.  So really, we should be celebrating and protecting our ignorance, instead of constantly doing things to destroy it.  Things like learning and reading and such.