This is effectively our situation too. I was unemployed when we met, but had already paid off a mortgage, so my now wife was able to restart her career by taking an entry-level role in a different specialism (law) without having to fund a roof over her head.
Before kids I did some contracting and sometimes earned more in a day than she took home in a month, but when DCs arrived I stopped to be a SAHD while she pursued her career. She's now a Partner at a national firm (not Magic Circle, unfortunately!).
Who has brought in the money has swung wildly over the course of our lives together, but we've always regarded it as shared. If we couldn't afford 'lifestyle' then we couldn't afford it, but for us lifestyle was always about our family and home life, and our values, rather than what we spent.
As a bonus, besides being able to invest well when I was earning, I have also inherited substantial sums of money and other assets across several continents. My investment income now brings in roughly double the average household income so neither of us even really need to work. We're happy driving a Dacia at our UK base, but I could buy a Range Rover outright on my debit card if I wanted to. We dress ourselves and our kids from charity shops and Vinted, but I have a couple of Savile Row suits for when the occasion requires.
OP would have rejected me outright for my poverty. It sounds like I dodged a bullet.