I married my wife knowing that I would be plenty miserable. She shows all the signs of being bipolar (but has refused to be evaluated), when she having a good day there is no one I rather be with. Her smile lights up the room. She is definitely my better half. When the other side comes out, she is down right scary - belittling anyone in her path, and at times wanton destruction. The kids and I just try to weather the storm.
We've been married for getting close to 20 years. I love her dearly, and could not imagine life without her. But there are times where I have wished I wasn't married to her. I got really close to moving out about a year ago, but made the decision that I loved her, and being with her, more than I hated those times when the evil side came out. When those times come, I just think about all she means to me and the happiness I have when I'm with her - even when she is being mean to me
She is the most beautiful woman in the world to me. She gave me several wonderful - at times - children. So yes, I knew what I was getting into, and don't regret it at all.