I just had a revelation. Imagine having futakuchi-onna as a wife.
Husband: "So where do you want to eat"
Wife: "I don't know, pick something"
Rear Mouth: "I'm craving italian food!"
H: "Why are you mad honey?"
W: "I don't know, figure it out!"
RM: "You left the closet seat up!"
H: "Honey, I'm so horny, can we do it?"
W: "I'm tired and I have a headache"
H: "Not even a quick BJ?"
W: "NO!"
RM: "Let me just suck on it!"
Food expenses would probably ruin you but that's a price worth paying for securing your mental health and stopping balding.