Earlier quoted context omitted.
"a mile from home. At that distance, there's a good chance I wouldn't be able to find parking any closer to where I'm going" Would you drive, just to travel a mile? Barely seems worth it in the best case. That's without getting into the environmental and social issues.
If parking were easily available & free, then whats the downside? 15 min + a bit of effort versus 5 min and no effort... and you have the convenience of having a car nearby for your next thing (eg lunch). The choice seems obvious to me.
So unless you're travelling somewhere afterwards, where's the upside?