In addition to what OP have said, Human Capital development affects the minds the people positively which helps the people contribute to the economic growth of the country. When there are good schools available, employment opportunities, trainings and other opportunities for human development, the minds of the people will be preoccupied with how to be productive to themselves and to the government. But when none of these are put in place for the people, we see these people stealing, vandalising and engaging in activities that may crumble the economy.
Educating them well will be at the highest priority in human development, as it is the first responsibility of every parent. But whenever the parents go to perform this duty, many people are deprived of this duty, and they only indulge in street robbery of the capital. But most of the reasons are those children who are uneducated and deprived in the society indulge in such behavior so if every one is well educated maybe then we would not see such behavior in the society.