Parents b**** at each other cause they are bored senseless and they would rather scream at the other person than take the time out to do the boring task of looking for the solution to their problem!They are really just tired and aggitated or hungry,and on top of that probably need some nooky or something else that they haven't figured out yet. My parents always bickered.My mom would always started it. My dad would always say "Your mom isn't happy unless she has something to b**** about".I personally could not comprehend not being able gripe at someone for or about anything.I guess I inherited it from my mother.I think it is healthy to gripe and complain as long as you both know inside that its only words. 
