You say, “The Lord’s way is not fair!” How can one possibly read today’s passage from the prophet Ezekiel without concluding that God is unfair? Why should an individual who has tried his/her best to lead a righteous life not be forgiven in case he slips? Shouldn’t his/her past righteous deeds count for something? 
There is no fairness when it comes to righteousness and evil. A righteous individual is held to a higher standard than an evil one because of what he/she (the righteous one) stands for. A righteous person shines before others and is regarded as a beacon of light/goodness/hope in a community. He/she becomes a reference point in people’s search for God/goodness. The same cannot be said about an evil individual. Consequently, when a righteous man/woman commits iniquity, he/she brings down not only him/herself but the entire community or rather those who looked up to him/her. This is because when he/she commits iniquity, he/she causes a scandal. 
A righteous individual is believed to have come to the knowledge of good and evil. By choosing to take the side of the good, an individual, as it were, makes a pact with the good and promises to remain faithful to the pact. When he/she chooses to commit a sin, he/she goes back on his/her word. Such an act is not becoming of he/she who has known God thus the reason for God’s supposed “unfair” treatment.