I agree, and think it's crazy that we as a society give up on mental growth for most people past a certain point. There's an enormous amount of potential that gets wasted because of the erroneous assumption that most people won't grow past a certain point. I think most people would be happier taking new classes, meeting new people, working on new projects, etc. than they would be sitting at home watching TV or reading about celebrities.

There's some, limited support for this kind of continual growth, but not nearly as much as there should be.