If they never play with people who do follow the rules they'll never learn. To them it isn't a sport, or a hobby even, just something to play around with. If they aren't really interested in the sport, they won't try half as hard as they could to get better and follow the rules. They just want to continue playing, not play correctly. It's like most of my friends who don't take airsoft seriously. Very few of them actually follow the rules.