We've all seen "Mr. Mom" with Michael Keaton in the 1980's where he plays a recently laid off dad who has an advertising executive wife who happens to be very successful. If you haven't seen the movie, you should, it's really funny!
In the movie Keaton portrays a mid-level worker who gets laid off and decides to stay home with the kids and let his wife go to work--classic role reversal. he makes the mistake of saying "it's easy, I'll handle to kids, no problem". We all know where that goes...
Anyway, needless to say he has no idea how much things cost and how difficult the life of a stay at home parent truly is. He ends up loving his new role, but not until he makes every "guy mistake" on the planet first.
Aside from being pretty funny, you can see that kids cost A LOT of money to raise! What would happen if your spouse were gone and you needed to pay for all of the items he did for the family? In my area of Silicon Valley, the price of a full time nanny excess $75,000 per year and more-staggering! So you can see that "a million dollars just doesn't go as far as it used to"! By that I mean that if you took a million dollars and invested it you could replace your non-working spouse for about 15 years. If you have young kids, that's something to think about.