6 years??

So recently it has been brought to my attention that people in my apartment complex hear my husband yelling at me all the time.  Its brought me to a place where I am evaluating my marriage of almost 6 years (Nov 12th is our anniv).  Don't get me wrong I do deeply and dearly love my husband, but is it sad that I no longer respond or react to his "bipolar" fits?  Am I becoming numb to all of the belittling, and mind games?  Am I going numb of all the mentally manipulative mood swings?