I don 't usually post on these kind of threads as I realise that my views are so minority that they become difficult to articulate properly[wry grin]
A bit of history first - I was divorced when I was 30, thankfully before having children. No huge sums involved as we were earning more or less the same amounts so we split the equity in the house and carved up some other investments and that was it.
However, the process of starting over again was pretty hard - moving from a large 5 bed house into a 2 bed flat (albeit very nice) is hard, no matter how over indulgent it seems.
I think that my experience of divorce has coloured my attitude to work and earning, and financial independence. I look back and wonder how I would ever have managed post divorce if I had children and no income. A scenario which I suppose I have actively avoided being in since!
I am fortunate to be in a good relationship, both of us have very comfortable income levels with regular nice sized bonuses. We do have completely separate banking arrangements, except for a joint savings account which all bonuses etc are paid into before deciding what to do with them. We also have separate savings accounts where we save our own excess monthly income (usually we bung all of this into a pension fund at the end of the year). It works for us, but probably because there is excess money around - if one of us had considerably less disposable income than the other, then it might not work as well.
I do worry about my future and my children's stability. I have no reason whatsoever to believe that my marriage might end in divorce or that DH might be run over by a bus, but I make it a part of our financial planning to know that should either event happen, I can provide adequately for my children and myself.
I don't think there is anything magical about being able to work in a high earning job and run a home - yes we seem to employ a small army of people to do things for us - but frankly they are things I can more or less live without doing myself, save for the nanny's job as I wouldn't mind spending the 14 or 15 hours a week she looks after the children for, with them myself. There are times when it isn't easy and every time I think of giving up work and hanging up my books - but there is always that nagging voice at the back of my mind telling me that I should hold onto what I've got!
So after all that, I suppose what I am trying to say, is that the need for, and the degree of financial independence within a relationship varies enormously between different people. Once you accept that, then the basis on which different people come to different positions or agreements is completely understandable.
Where it gets tricky is where one party to the relationship is dominating the basis on which that agreement is reached, as seems to be the case with the OP. If you are happy with your financial arrangements as a couple and they have been arrived at from a true joint negotiation process then that is fine. The problems stem from where that process hasn;t happened or where things have changed without new deals being put in place.
The scope for discontent does run both ways though - I hear as many grumps from men about how they feel their wives are taking them for a ride, as they spend their days at the gym and shopping, as I do from women who feel men are being 'tight' with their money!
Negotiation is the key to all of this - talk, talk and then talk again would be my motto