Vinge's "zones of thought" provide for an interesting framework to think about the disparities between intellects at different levels of development. The thrust of the idea is that minds that exist in certain environments are (likely) well-adapted to it, and are likely most able to find their happiness in that environment. So if one has the opportunity to rise to a dramatically more sophisticated way of life, is it really best to do so? Might one not be happier with the simple life?
Its an old argument, and intuitively I think my answer will always be that I'd rather risk being bewildered and lost in a new environment than be in the same one forever.