I don't think it needs to be "wife" other than to rhyme. Having a happy partner instead of an unhappy partner (regardless of gender) is certainly better (speaking from experience).
This matters in business too.
This matters in business too.
Finding good business partners is like dating
If people want to have a long-lasting and successful marriage they need to be clear-eyed and pragmatic about it. The fact that Hollywood makes a fortune selling romantic stories has not helped!