We humans are often quick to judge others, basing our assessment on what we know about their lives. Worse yet, we may share our opinions with others, thereby fueling and spreading observations that are superficial in nature.
In fact, we often know very little about a person's life, having learned only what they chose to share. As a result, we interpret their behavior and decisions with an inadequate understanding of their reason or motivation; this unfortunate tendency most often occurs with casual acquaintances but may apply to close friends and family members as well.
Some of us seek counseling to understand our own emotional issues; yet, we may not hesitate to expound on the behavior and choices of others. Judgments made in the dark are neither fair nor likely accurate.