I recommend you leave your wife and marry a sex doll. Humans, either due a design flaw or planned obsolescence, grow old and look progressively uglier. Since beauty is your chief criterion in selecting a life partner, you can choose a perfectly designed sex doll and never worry about her looking any less beautiful.
The only problem I foresee is that she may seem dated when they come out with robot escorts. Never fear: as most principalities don't recognize civil unions between humans and inanimate objects, leaving her for a robot shouldn't be much of a hassle.
Sex dolls are known to be incredibly passive, so even if your temper is a bit sharp, you'll never have to worry about quarreling. As they have introverted dispositions, the burden of conversation may often fall on you. Your future sex doll wife will adore your taste in music and television.
Of course, high end sex dolls can run pretty expensive. Think of this as a dowry. Additionally, it is unlikely her family will pay the costs of the wedding.
