Why can’t they resist cheating?

The question, "Why do people cheat?", is so common I'm rewording it. I understand the top reasons why they do but I really need to know why they can't. Are their families or partners not enough reason not to? Do they think of their children, of the people that will be affected, of the consequences…


"You are young; so was I. Do not think for a moment that doesn't count. It does." "Be nice to your parents. I hope my son watches this someday." "Go out, do the impossible, and just be the best generation yet."  -Justin Timberlake; Teen Choice Awards '16