I usually don't care much for sappy quotes, but I always need to be reminded of this. Coveting is ugly, and, if left unattended, grows into jealousy. And jealousy can grossly interfere with God's plan for your life, but, even worse, it can interfere with His plan for someone else's life.
Yes, some people really do suck. Why invite them into YOUR precious life? God gives us a finite number of days above ground. Why pollute a single second/minute/hour/day/year with a sucky person? If they were the tray that raw chicken comes in, how long could you stand to leave it in your kitchen trash? Time to kick those stinky peeps to the curb trash can for pick up, baby!