My exhusband has a phd; he has followed both the university and industry path. He lived, breathed, and slept work and his career; it was the only thing he could ever commit to. While it takes much to earn such a degree, he never seemed to move on and progress from that stage. It's not much of a stretch for me to say that most of our so-called marriage and most unconscious partnership took place at and around his desk. While I've been told I am most rational and analytical, it's not how I prefer to relate to others today; my ex was really cut off from his emotions, and was incapable of verbal and emotional intimacy. His life had no balance and my only purpose was as the staff. We lived two very different and separate lives; not something I'm willing to do again. Since time has passed, he has admitted that the number of papers and patents he has are unimportant; it's just at the time for him they were the end all of being. So while the generalization is that professors have much time, it's been my experience that they choose not to make any, much give any to a relationship that takes time and nurturing if it's to grow and mature.