It depends on the people in the marriage.
I've known some people who will tell you they are awful with managing money, paying bills on time, and are more than happy to put that on their spouse's plate.
I knew one female friend of mine who was sick of managing the money and forced her husband to do it for a month. She never let him do it again. For some reason he never carved out the time to go over the bills and acknowledge their due dates. If she allowed him to control the money he'd spend it as if there is no tomorrow.
The only time managing money seems to be an issue is both people don't agree on how money should be spent or managed. For some couples the only solution is to have his and her checking accounts, have a joint savings account, or agree on who will pay certain bills to avoid arguments.
One thing is for certain putting all the money in one account while one person is a "saver" and the other is a "spender" is going to cause problems. It's usually the "saver" who is going to be upset.
It's not about "right" or "wrong" but rather "agree" or "disagree". Every "happy couple" eventually reaches an agreement on money.