I always find it interesting how other people do things. I am not keen on the 'big pot' idea, not sure why just have never done it. It never occured to us to get one. DH and I don't have a joint account, never have, and don't suppose we ever will. DH works FT and earns far more than my PT wage, but we both have things we pay for - he pays the mortgage, all bills, food, cars etc, and pays a small amount into my account each month, and I pay my petrol, all kids stuff, like guides, cubs, clubs, clothing, school stuff. He has never paid for a birthday or Xmas present for the kids as i do all that. Oh we do have a joint credit card, but also our own too. I pay for my gym membership (which I use) and all my own clothes, pension, hair cut, etc.
It works for us. DH has been using 'spare' money to over pay the mortgae, and save, and i have some savings too, whcih we use for holidays. I wouldn't want a joint account, I am not sure why, just like my own account.
I have always worked, even when the kids were tiny, so I have always had my own money. DH is very frugal, he would cringe at the amount I spend on handbags and boots - best he doesn't know.