The marginal utility of Tate's Chocolate Chip Cookies

I absolutely LOVE Tate's Chocolate Chip Cookies.

Sometimes, though, I'll absentmindedly eat way too many of them.

After all, they're pretty thin!

I’ve noticed that a very interesting thing happens when I do this:

Bite 1: Best thing in the world, ever.

Bites 2–10: Really good.

Bites 11–15: Good.

Bites 16–20: Meh.

Bites 21+: Okay, now I’m sick.

Of course, this phenomenon doesn’t only occur with cookies. This is a well-documented economic principle called Marginal Utility, and (you guessed it) it applies to money, too.

Just like cookies, beyond a certain point, having more money will not lead to more security, freedom, and happiness.

Fact.

The academic literature on that is clear.

My question is: Why do we devote so much of our time, energy, and attention to having more?

Wouldn’t we maybe be better off if, instead, we focused on having enough?