
But wait a minute, how about the time spent getting ready for work, commuting to work, having dinner, relaxing and going on Facebook/9gag/Twitter? Also, does anybody actually keep "9 to 5" hours? Last I checked, my employment contract say "9 to 6".
Children imitate the high-consumption lifestyle of their parents, living in a way they believe appropriate for the wealthy to act. This will limit their ability to accumulate wealth on their own later on in life.
Children develop habits from young, emulating the behaviour of their parents. Hence, it is not sufficient to tell children to be frugal but inculcate such discipline through being credible role models.