Bath time conversation with a six year old

Bryce: Why are girls so grouchy?
Me: When you get older you will understand, you will have a girlfriend and all will become clear.
Bryce: I am not going to have a girlfriend. I am not getting married.
Me: Why?
Bryce: BECAUSE, girls are too grouchy.

As you can see, at the time, I did not really have a clear answer to give him. I thought I was being too grouchy at home and that was the reason behind his question. But, he informed me that the girls at school were too grouchy.