I've always worked, and it's been good for us -- most of the time. When the kids were small, our household ran pretty smoothly EXCEPT when my husband traveled or when one of the kids was sick. At those points, it was horrible.
Things I'd suggest you kick around while making your decision:
- Dad, how secure is your job?
- Dad, how regular are your work hours? How demanding is your job? Do you travel? Would having a full-time parent at home make it possible for you to advance in your career more effectively?
- Dad, do you have access to good health care and other benefits?
- Mom, how easy would it be for you re-enter your career in the future, if you want or need to do so? If it'd be difficult, how could your keep yourself up-to-date?
- Mom, are you prepared to search out ways to save money at home? Are both of you ready to make small financial sacrafices to make this work?
- Mom, are you emotionally okay with being "out of the adult world?
- Both of you, have you done the math both ways -- not just your weekly/monthly paycheck, but also your long-term savings?
- Both of you, how secure is your marriage?
Finally, this isn't a decision you can make without considering the financial, the emotional, and the practical side of things. Regardless of what you decide, I suggest you agree to take it year-by-year and decide whether everything's still working for your family. What works with one child isn't necessarily what will work once you have more. What works when you have pre-schoolers isn't necessarily what works with teenagers. So agree to reevaluate periodically (we do a big financial look-over every New Year's Eve and on our anniversary, which falls in summer).
And one more thing -- yeah, I know, I said "finally" already; clearly, I was lying -- do not neglect life insurance and disability insurance for both parents, even if one is staying at home and isn't earning. The REAL financial nightmare is that the stay-at-home parent becomes ill and unable to care for the children, meaning that the working parent has to pay someone else to do those things AND has to pay medical bills. Avoid ever placing yourself in that situation by maintaining good insurance as long as you're raising kids.