Mind your generalizations there. I stated a PhD program because I wanted to do something about the poor preparation of my colleagues. I wanted to teach. But I learned to my chagrin that that's not what gets you hired, nor is it what gets you tenure. So I left academia once I got my degree. I don't think it's even true of all those who remain that they're there because they love research. Some of them are like me, but with more perseverence. Swimming against the tide, trying to teach.
