Shoplifting: why, how do people do it have you ever?

I did a little lifting when I was a kid. Just a few things here and there. Started almsot by accident...I just walked out with something in my hand and forgot to pay for it. I did that a few more times on purpose and got away with it. It was mostly the thrill. Then I got caught. After the little scared straight routine the mall pulled on me (I think I was 12?) it didn't seem like much fun anymore.