This is actually nothing new. It has been done for centuries among the wealthy, around the world. Italian palazzos are built with his and her wings. The English aristocracy have his and hers castles.
It’s not done so much among the middle class, for financial reasons, although if it were financially possible for more people, it would probably prevent some divorces. Not every couple is meant to be a “togetherness” couple all the time. Some couples are at their best when they have more personal space.
I once knew a couple who had his and hers condos in the same building. They lived literally next door to each other, in separate units.
My older sister has a similar arrangement with her longterm SO. He lives on the 10th floor, she lives on the 7th floor.
And in fact my younger sister has an unconventional arrangement with her husband. She is an international flight attendant and is gone a great deal on trips. You might say that she and her husband live apart 50% of the time since she is staying in hotels on layovers while he is at home. She has told me jokingly that it keeps them from killing each other. LOL
As for examples outside of marriage — my sister and I once bought a house together when we were single. We deliberately chose this house because it was a split plan. I had two bedrooms and a master bath upstairs, kind of like an apartment. She had a huge master bedroom with a second master bath downstairs. There was a common living area with kitchen, livingroom on the first floor. It was fabulous… we could come and go at all hours without disturbing the other, have boyfriends over, whatever, kind of like living in a dorm. We probably would have fought constantly if we hadn’t had that space from each other. It was great!
Also too, when my parents were divorced many years ago, they got houses several blocks apart. My sister and I didn’t experience any problems with the divorce because my parents remained friendly and highly involved in our lives. My sister and I went back and forth between the two houses constantly and there was no confusion or trauma.
I see nothing whatsoever wrong with your idea, if you’re financially able to do it and it works for you!
As to your question though, no, it wouldn’t work for me because my situation is very different from yours. I was single for a LONG time. I didn’t meet Darling Husband until I was in my 40s. I did the “living on my own” and “having my own space” thing for, geeze, like 25 years! I waited so long to find the right guy, that I love us being together under one roof now. Fortunately, our house is big enough that I am able to have one of the bedrooms as my “girl cave.” I’ve converted it into a posh, feminine, dressing room with a make up vanity, jewelry trees, perfume cabinet, couture art and the whole nine yards. I love having my own little retreat within the house.
However if I were in your shoes? If I had met him when I was a teen-ager? Had never had my own place and all that? You bet I would consider separate living spaces, if it were financially feasible.
Go for it, and make no apologies or excuses to ANYONE. March to the beat of your own drummer, girl.