What if it never makes sense?
One thing I didn't realize until embarrassingly too late in life is that savings should only function as a buffer for emergencies. Anything else is just burning your money since there haven't been savings accounts that consistently beat inflation even in the US.
I was fed these same myths as a kid, and earnestly believed that part of success in life was to have a huge savings account one day. I remember well all those "power of compound interest" talks in grade school, about how working hard and saving was the path to wealth. But that's all a complete myth.
The real irony is that anyone who has built themselves serious amounts of wealth typically does so by making high risk/high reward choices. Teaching kids to play it safe and building saves, different desires to the future etc. doesn't make any sense in the world we live in. It's ultimately bad advice. No one I know who ended up very successful did so by living conservatively and within they're means. They're people who aggressively pursued improving their conditions, often times because they were forced too precisely because they didn't have a savings.
The lesson of "save money, life within your means and make conservative choices" sounds nice, but in the world we live in today this is a recipe for short terms austerity and long term decline.