How much education???

Something that has come up around me lately is the question of how much education is enough education? I know it seams like a no brainer, being that we will always be educated. Not a day goes by where we don 't learn something new and add it to our lives. Even if we are house bound and the only thing that we have to connect us to the outer world is our television, we still will learn something new.
The focus that I'm asking though is in formal education. The reason this is my topic on this beautiful Thursday morning is in response to an article I read in the NY Times today. It looks at continued education at the middle aged and elderly stand point. Is there room for it in our education system. Well of course it is. Not only does it generate income for the universities, but everyone of all ages want to feel that they are bettering themselves. This doesn't even begin to focus on the social aspect that a classroom setting gives to this group of individuals that would not normally be surrounded by other focused, inspired students. Here is the link to the article if you have any further interest in it.
http://http://www.nytimes.com/2010/08/26/education/26HUMANITIES.html?_r=1&ref=todayspaper