Hi,
I would understand you quitting your job and finding a new one you like better/suits you better, and would actually appreciate that your partner is not expecting you to bring money at all costs, thus respecting you and your happiness.
I would also understand you quitting your job because your fiance is moving somewhere else (for his job, possibly a higher salary) and you are moving with him, then look for a job in the new place.
I would even understand -though, as a European I don't believe in homeschooling- that you stayed at home to be with your children, although we would be setting foot on sexist territory (why not him quitting his job?).
See, because usually the man has a better salary than his wife/girlfriend, she is the one expected to quit her job when children come around. But that fact only reinforces the idea that women are expected to stay at home, thus their salaries should be lower since working should not be a priority for them.
The truth is, economic independence will set you free. ALWAYS. No matter how low your salary is, it is YOUR salary. That means you can do as you please with that money because it is yours. So, if things go downhill -and this can happen-, you can do something about it. You have the choice to leave. And you won't owe anyone anything. Because, yes, in the end it might come to that. So many women feel trapped in unhappy marriages because they don't have the money to just leave.
Quit your job. Do not quit working.