The World Revolves Around...?

I was talking to a co-worker in the gym yesterday, and he was relaying his metaphor about the solar system and how life changes through various stages. I kinda liked it, so here it is:

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When you're single, you are the Sun, and everything revolves around you.

Then when you get married, you then become the Earth and your wife becomes the sun, because your world now revolves around her. In some ways good and others bad.

After you have kids though, you then become the moon - revolving around the Earth that now represents your wife. And you are both rotating around the kids (as the sun), which have become the center of your Universe.

And the glue that holds it all together is money.
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I like it all, that is, except the ending. In fact, I gotta say that the last part really sucks.

What if the money disappears? What if you lose your job, like so many people in America (or around the world) are experiencing right now? Then what happens - the family dissolves and the "planets" drift apart?

The glue that keeps it all together - the gravity of the whole system should be the one thing in life that is stable and unchanging - God.