We have always had joint accounts. DH has a career and some years I have worked, some I haven't but there isn't any mine or yours- it's all ours.
If we buy something expensive, we will run it past the other, but other than that, we are adults and we trust each other not to empty the account buying rubbish.
We married very young though, when neither of us had been at work very long so we were never possessive about money (we never had much in the beginning)
My friends who married when their careers were rock solid were much more set in their ways about money and struggled to think of it as a joint family pot. Most of the friends who have discussed it with me, say that they have separate accounts still forever transferring payments for bills into different accounts and talking about owing their DH money.
One friend has a real tight arse husband who made her save for her maternity leave to keep up her end of the bills, because he didn't see why he should pay for her to lounge about the house on a jolly while looking after their child for a year. She has no idea how much he earns and lived off her child allowance for a long time.
She came into a huge inheritance recently and won't let her husband near the money, despite his sudden urge to pool all their resources...