Because even a great cake tastes better with icing. OTOH, you can't really hide the fact that a cake tastes cr*ppy by covering it with icing and if a cake is all crumbling and falling apart, you really can't count on the icing to hold it together. I think a Deida man would marry if he found a woman who complemented him rather than completing him. So, maybe more like the ice cream served with the cake? Like, he'd be thinking "It's time for dessert. Let me cut a nice piece of "me" cake. What happened to that ice cream that tasted so good with "me" cake the other night? Oh yeah, she's back at her own refridgerator. I better give her a call and see if she can come over." and then eventually it seems like it would just be easier to make room for her in your own fridge since you're eating her every night anyways.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver