David Deida said it best...
STOP HOPING FOR YOUR WOMAN TO GET EASIER
A woman often seems to test her mans capacity to remain unperturbed in his truth and purpose. She tests him to feel his freedom and depth of love, to know that he is trust able. Her tests may come in the form of complaining, challenging him, changing her mind, doubting him, distracting him, or even undermining his purpose in a subtle or not so subtle way. A man should never think his womans test will end and life will get easier. Rather, he should appreciate that she does these things to feel his strength, integrity, and openness. Her desire is for his deepest truth and love. As he grows, so will her testing.
Regardless if the relationship is good or not, a woman will always challenge a man to varying degrees. A poorly educated woman will throw tests that question her morality, whereas a good woman will do just what Deida described above. It is more like a gnat on a hot summer's night, or the hardened chocolate someone left on the dirty silverware.
Is it annoying? Certainly.
Is is a big deal? Certainly not.
Learn to navigate her moods and she will fall into a trust which no man could ever match. I would say that the lady and I have a fantastic relationship, and we still get into it about once a week. The simplest way to handle these moments is to ignore, tease, listen, or turn into a joke. There is no single response that works for every situation, bit you must learn how to respond appropriately.
GOOGLE: "David Deida women dont get easier" for the full chapter