People with no confidence or with low self-esteem often tend to see people with confidence and high self-esteem as arrogant, snobby, or stuck-up.
Taking time out of your day to look down on and judge other people only steals time away from yourself, inhibits you from reaching your own goals and dreams, and also steals precious thoughts and time away from the people in your life who deserve your attention.
The more time you spend thinking about what other people are doing wrong, and worse, commenting on it, the less time you have to become the best version of yourself.