Yes, if you have children who rely on your for support you probably want to consider buying a life insurance policy for you and your spouse.
Whether or not you both work, it would cost the breadwinner a lot to find someone to replace the efforts of the spouse that stays at home raising the children, if he/she passed away.
In addition, life insurance can help to replace the breadwinners income and provide financial security for your family.
The proveeds from a life insurance plan can be used by the beneficiary for any reason, including paying off the home mortgage, providing for living expenses, paying off credit cards, provdiing for your child's education, money for vacation, retirement, etc.
Here's a helpful article explaining why do we need life insurance to help you better understand why someone like you may want to consider the purchase of a life insurance policy.