Worrying about scarcity is our culture's version of post-traumatic stress. It happens when we've been through too much, and rather than coming together to heal (which requires vulnerability) we're angry and scared and at each other's throats.
Brené Brown (2012). “Daring Greatly: How the Courage to Be Vulnerable Transforms the Way We Live, Love, Parent, and Lead”, p.32, Penguin