The purpose of parents working hard is of course as you said, they want a more decent life and focus what they have managed to achieve for the good of their children, or the point is that parents want all their children to live well or even more than that. But on the other hand, there are quite a few parents who instill a hardworking spirit in their children, they only focus on pleasing all their children and their other families from the results of the hard work they have done and without giving a proper understanding of the difficulty of earning money, which is why many children of rich people live in luxury by doing whatever they want to do, buying whatever they want without thinking and also often splurging, so the idea of the title above is very true that the luxury and lifestyle carried out by the rich does not rule out the possibility of making their parents fall into poverty or return to the lowest point in life.
Understanding related to management really - must be applied to them, too much in fulfilling all the wishes of their children easily will certainly make a child more spoiled and I think it is the wrong upbringing, not infrequently we see the children of rich people who disobey their parents, it is because of the wrong upbringing that makes them too spoiled. So the application of correct understanding, especially regarding simple living, is really recommended.
Management and being humble is what they should be taught. Well, I don't want to speak about it because I know it's hard to teach kids and hopefully I'll be able to apply that to my kid.
That's because I've seen great, humble and hard working parents but then, their kids are not. It's easy to tip on what must be done but when someone goes into the actuality, everything changes.