Sadly, life is not a movie. Life is an impossibly long and unyielding march to the grave, peppered along the way with myriad disappointments and misfortunes. Living is a mistake and everyone is trash, which is why shower sex usually winds up with one or more of the naked parties shivering alone at the back of the shower, trying not to slip on a viscous glob of body wash, while the other gasps and sputters as shampoo burns her sensitive eyes. Your wife sounds pretty sensible. Just leave her alone already.