When I met my husband I was working in a healthcare capacity (not a nurse though). I have a degree and was doing a masters. It's was what many people would consider 'worthy' work but the reality was, it was only ever going to afford a certain income and I found myself frustrated by bureaucracy and feeling burnt out most of the time.
With my husband in my late 20s, it all happened very quickly in the sense he has proposed within 4 months. I can't really remember how much he earned at the time, but because he was in derivatives trading, his bonuses could be maybe ten / twenty times my salary. Something like that, and it only escalated as the years went on. I was never going to be able to remotely compete with that, working or not. Shortly after I finished my masters, he needed to go to HK so I went with him. I was burnt out at work anyway. Shortly after we got married we also lived in Sydney and NYC. We came back to London when was pregnant the first time. Then I had another one 2.5 years later and another 2 years later, so by the time they were all in school about nine years had passed. It never occurred to either of us that I would go to work in this time and get a nanny in instead because I don't need to, didn't want to, so what would be the point in that? Also, where we live, many women are in a similar position so I never felt unusual at all.
Then, when they were all in school, there still didn't seem any need to find a job that fitted in school hours. If I'd needed to financially, I would have done, but I didn't so I wasn't going to do it just for the sake of it.
I never felt 'financially dependent' because at this point, we had built up assets as a family which were equally in my name. My husband never made me feel financially dependent in any shape or form. That would be ridiculous and he just doesn't think like that at all. We have bought properties which I have supervised the renovations of. Lots of investments we have done together, much of which is in the children's names or mine. It was never like 'living off his salary.' I couldn't even tell you what his salary is because it was never like that. If being a SAHM had meant living month to month on a fixed / limited amount with nothing else to underpin that, I couldn't have done it.
My kids are teens now and I'm still glad I can be here after school and generally available. Teenage years are no easier actually. I guess I could get a job, but the truth is I'm not going to because there isn't a massive push to do so. Plus, my husband works a lot less now and the whole point is that we want to make our lives less busy, not add another commitment to it. I'm involved in a lot of things aside from the kids and my husband also has considerable time to do all his sports and hobbies.
So this is how it has evolved. In another type of marriage I would no doubt have been working all these years. That would have been fine too, just different. You know what you know. But nobody sets out to make their lives more complicated than they need to be. I've been very happy with how things have played out in my case, but fully accept being a SAHM would not be for everyone.