Not having a license is "All Rights Reserved". That's why I bothered with the license section in the readme at all.

In many countries in the world it makes a huge difference to not having a license. If its not properly licensed or licensed at all, then it means in many countries in the world the most restrictive one, the entire opposite of the goal: Do not use without permission. By not putting the license text and clearing things up for the user, means it is not properly licensed. Therefore in countries like Germany this project would be a violation to use without permission. It becomes a liability, as the person could potentially sue anyone (in those countries).