When you buy a car you just don't look at the engine and how reliable the car is, i don't, i want the whole package.
When you look at beautiful things our brain releases chemicals that make us feel good and that goes with a beautiful wife.
Same with your future wife "package" is the key as long as you can also be the "package" she's looking for.
After my divorce from my JW wife i was committed never to marry a JW again, they are nuts and mostly due to the indoctrination of the religion.