If your income is limited so that you all have to worry about keeping the bills paid, and especially with small kids in the house, I think your wife has a say in the matter for sure.
In my case, both my wife and I are employed, most of our major debts are gone, and we have some disposable income. She has her hobbies, and I have mine. We don't get in each other's way.
It all depends on where you are in your lives.