?? if your married and trust each other why separate accounts ? had a joint account for last 32 yrs .. everything go's in and if we need want something .. just get it ..
i would say what ever works for the couple.
my parents are like you, my mums money is my mums and my dads money is............. my mums
FWIW i am on my 2nd marriage and have done it both ways
1st way like my parents, all money into joint account.
2nd marriage we have our own accounts, a joint account and then a buildings account with money in for my wifes flat that we rent out.
now, my 1st divorce was nothing to do with finances or trust from that side of things,
but personally the 2nd way works better for me............. in my 1st marriage my wife was one of those people who was constantly spending money on tat, i never said anythign but it constantly irked me the crap she wasted. OTOH day to day, i spend nothing over essentials........ but when i buy i go big, it tends to be really big (new games pc levels of big) and when i did this i invariably felt guilty and got stink eye off the mrs despite over the course of the 12 months i spent no more, probably less on fluff than she did.
now it is better all round for my relationship and again YMMV but all bills and stuff for our lad are split from the joint account which we put money into each month (though we need to up that as we are doing emergency top ups almost monthly now, then everything else is ours to do with what we want in or current accounts no guilt, no pressure and it means we can buy each other gifts without the other seeing what it cost.
it also works for us because we both earn similar (actually my wife earns more than me now). of course however if one of us needed money it would not be a problem taking from the other. not had to yet however.