Being 31 can be a bit different in different states
This is not to imply that every man is like this, but there is some truth to this assertion. Some men in big cities appear to have a strong desire to cling to their youth as much as possible. And that is completely fine.
When you live in a big city, who cares how old you are as long as you can keep up with everyone else, right? Regardless of age, it is never a bad idea to brush up on some basic human survival skills.