What is it? (Life Lessons)

So is it the ignorance, that refrains one from choosing, the difference between right and wrong, as an adult? Does the reality of others, along with day to day experiences, not help the growth of adulthood? I'm sorry I just don't understand what is wrong with people. Why is it so hard for some to understand how important life is to others, regardless of how careless one may be, the thought would be with blood & daily living do you not have the respect and courtesy of others ever in your mind?