Actually, It was harder for me to move from a weekly pay to a monthly one

For sure it is harder. But, it is also something that can help people grow. In Finland, most salaries are monthly, with only some blue collar workers and kids in fast food getting paid bi-weekly. That tells something, doesn't it?

If you want to learn about finances, you will learn.

Exactly!

I make it into little games and quests with my underage nephews.

And this is awesome :) If you have some examples I could use with my daughter, that'd be swell.

If you start saving and planning by the time you are 18. No excuses.

And this is where it all can start (or before). But the "only young once" paradigm seems to be well into the forties.