I think they
will find gambling. That said, just like any drug it takes a "first time" to get addicted. Without these machines, it's likely that some people might never discover this addiction.
Where I went to school in Montana, many (if not most) of the gas stations had poker machines and some had slot machines. I remember often seeing the same old lady with a bucket of quarters at the gas station by my house. She'd be there late at night and early in the morning, essentially not sleeping, just gambling. It's a very sad addiction.
My wife had never been to a casino and one night we went out with some friends to a Casino in Detroit. After 10 minutes there I looked over at her and she was crying. "It's so sad" is all she said. -She's right.