I’m now on Day 13 on my road trip at my aunt and uncle’s farm in Blue Earth County, Minnesota — today is the first day of the planting season for corn. It’s getting a late start because of all the rain. My next stop will be in Iowa. If there’s one comment that has come up in most of my interviews with the people who wished they hadn’t borrowed money on a credit card, it’s that they used the card for things they realized they “didn’t really need.” That word “really” hints at the notion that there is actually a lot of ambiguous space in between want and need.…