Alacrity

From an article on a live cheap, look rich lifestyle.

"Get married, but don’t have kids. According to Andrew Oswald, an economist at the University of Warwick in England and something of an expert on the intersection of money and happiness, getting married adds a happiness factor that’s equivalent to having $100,000 added to your household income. This is not true of having children, Oswald says. His surveys have found that adding kids to your life (or not having them at all) didn’t seem to change people’s happiness one way or the other. Which is good. Kids are expensive, and since most rich people just send theirs away to boarding school anyway, you could argue that the best thing for your Live Cheap, Look Rich lifestyle is not to have the little monsters in the first place."

They make it sound a little callous, but I have to agree on the no-kids idea.