Not just physical consequences. There's the damage to your own empathy to consider. The more you victimize others the easier and more tempting it gets. You are the sum of the choices you make. It's very easy to get into the habit of thievery. Best not to start unless you want to be a thief, even if you know you won't get caught. Choices aren't only about the moment, they're about who you are and who you're going to be.
I'm not anti-Christian. I'm anti-stupid.