Many people expend a lot of energy judging others and thinking that they know how someone should behave or what they should do. Are those the types of individuals that you want to hang out with? If they are judging others, they are also judging you. How much do you trust someone who expends so much energy on looking at what others do in disapproval. If you are the person who is constantly judging others, is that really working for you? How does that behavior improve your life? How does it serve you to constantly look at what others are doing or not doing?
Each of you is on your very own journey. You will learn the lessons that are appropriate for you and you will learn as you need to learn. There is absolutely no reason for you to worry about what others are doing or not doing. You have enough to do working on your own life.