They just don't get it

I deal with all kinds of people and it just amazes me how some of them just don't get it.  Parents who are experts (just ask them) but in reality they haven't a clue.  Those who are unhappy about things in their life and they do nothing to improve it except complain and maintain a negative attitude.  Those who have everything going for them a good relationship, a loving family, a good job but yet they are willing to throw it all away for selfish reasons and taking it all for granted.  The teenagers I deal with have a some what legitimate excuse in that they don't look any further ahead than tomorrow and are all wrapped up in the present.  I wish the adults could get it sorted out.