Smart couples decide jointly on things they jointly understand and know something about. We’ve been married 51 years and agreed that on many household things I’m no expert and my other half makes the decisions within an agreed budget! On car stuff that’s technical she leaves me to decide. But all still within budget!
On big items we jointly research and decide. The house we have lived in for 34 years now was the result of much shopping and shortlisting 6 properties that met our needs.
Many of my wife’s friends have SUVs and vans. She would have none of that for her next car. Since she wanted something as close to a sports car but still be able to carry groceries and sports gear, a Mazda3 Sport Hatchback was her choice. In her previous car, a Nissan Sentra, I had a ski bag installed that fits under the rear armrest and extends from the trunk into the car to the back of the front seats. It holds up to 3 pairs of skis and poles! No messing with ski racks! Expensive European cars often have that.
In business decisions are made at the lowest sensible level (within budget) for efficiency’s sake. Well run companies push this down as far as it makes sense.
I know a couple where the husband goes shopping with his wife and has has veto power over every item it the cart. These people are normally called control freaks! I also know a family where the wife is a health freak and makes her husband eat all sorts of stuff he does not really like, but is supposedly good for him!
We are fortunate to like the same kinds of exotic foods (Vietnamese, Thai, Korean, etc.) , love the same wines, and even have the same taste in beer!