it!  My husband and I rarely fought until Jack came along.  Not that we fight all the time now, but from almost no fighting to more often fighting, well, there’s definitely been a change.  My personal theory?  Neither one of us have a clue and so we look to the other one to know what to do.  Either that or the lack of sleep.  Coincidentially, since Jack’s sleeping through the night, the fights have stopped.  So, having a baby to save the marriage has got to be the worst plan out there unless you just want a warm up period to perfect your fighting before hitting divorce court.