I never had a joint account with exh. I transferred what we agreed as my part of Bill's to him and they all came out of his account.
I remember talking about this issue, when I first joined and MN (almost 10 years ago) and lots of posters thinking a married couple not completely combining finances was ridiculous.
I think now it's not such a big deal.
I divorced exh. I had more money in my own accounts than him because he is shit with money. Dp and I have a joint account for Bill's only. We have our own savings and our own money. If we are going on holiday we plan together and have complete trust that when it comes to paying for something we can both afford our share. So a holiday, no worries he wouldn't have the money when it came to it.
When he was married, his wage went straight into his wife account and he got a small allowance from it. She wouldnt even let him have his own back account. So he woildnt ever go back to pooling money. Neither would I, as exh would spend everything he could get his hands on. Which is why my money was kept separately.
I have always worked full time though. Much easier to do this when both have money coming in and similar amounts of left over money.
My mum got screwed over I'm several divorces, because she didnt work. Never learnt from it and doesnt even work now me and my brother are 35 plus. Each divorce was a upheaval. My divorce was far less devastating and worrying because I had financial stability independently.