Well, she is. And you're not. You need a little bit of excitement in your life, some edge to make you feel alive. Marital bed missionary just isn't cutting it - it never has. I know you can't tell her about all the kinky things you like to do but... You told me. I know everything. I know that you need me in your life, you need my teasing and sadistic dominance. You also wouldn't ever entertain the thought of leaving your wife and, well, that leaves you quite... Vulnerable.