I'm 100% financially dependent on my wife. I see her as my team-mate and partner in life, equals in navigating this difficult world. Which is reassuring, because I certainly wouldn't want to do this alone. Our marriage is rock solid, but being financially dependent is definitely a vulnerable position to be in. As a man, I feel like traditional society doesn't approve of that arrangement- since traditionally, men are supposed to provide for their wives, which in the 21st century, I think is an antiquated, and even harmful idea, but it persists nonetheless. And then the other side of that is, in the unlikely event that something were to happen to my marriage, and I no longer had my wife's support, I would be without a lifeline, and I doubt the job market would take kindly to a man who hasn't worked for the past x number of years because he chose to raise his children.
I think this dependence ultimately forces us "dependents" to remember why we chose to be stay-at-home parents. I personally value it tremendously. I think it provides an invaluable service to my children, and the family as a whole. Therefore, I think the financial risk/vulnerability that comes from that, is worth it. But it does require the complete trust of your partner. If any trust is lacking, then it's not a very fair contract. If I didn't trust my wife completely, I either would not remain a stay-at-home parent, or I would seek a source of income that I could rely on in a worst-case-scenario.