Not always, some of us are honest.
My last employer was an multinational American corporation. And despite having full access to everything on the server, desktops and portables, including T+A, payroll systems, BACS etc. I am still a poor man financially. Integrity wise, something I value over money, I am quids in.
A divine being I ain't. I just set my own standards and adhere to them, in spite of the temptations.