I have just made a shocking realization:
Not one of the teachers mentioned in the *entire* Harry Potter series was married! Not a one. My new theory is that the Ministry of Magic punished teh Gayz by sending them to remote/isolated schools to teach. Thus, removing them from greater society ...
... But giving them a freakish amount of control over future generations [Hey, no one ever said the Ministry of Magic comes up with *good* ideas].
No wonder Snape had such a fascination with Harry.