DH and I have always kept our own bank accounts. Over the years we have ended up with a joint mortgage, and have a current account that all the household bills come out of, that we both pay into every month. Apart from that, all our money is kept separate. I am fairly sure that if we shared all our money it would be something we would fall out about, fairly often.
The reason I am asking is because there is one couple we see often, and if we make any mention of, who is going to pay for dinner etc they will always comment on how odd it is. It is an opinion I have often seen on here too, that all finances should be shared, and I just don't get it. It feels very important to me to be financially independent.