You are absolutely right. From what I have seen most people that grind it out long enough to get multiple degrees and PHDs have no interest in digging ditches or throwing a new roof on a house, and the people tough enough to enjoy that kind of physical work have no real interest in investing the amount of time and money necessary for formal higher education.
Its the people stuck in-between that always feel like a fish out of water no matter what they do (me).
yep i know the type. my friend has a wife who is like this. he is the blue collar type who fixes cars for a living