Cars are not a good example because people need cars. But alcohol is a good example, nobody needs alcohol and plenty of innocent people die from drunk drivers. Yet most people consider alcohol "normal" and the idea of restricting it to home use only, for example, as absurd. But since these people didn't grow up with guns they consider them "abnormal" and see no problem with restricting them, since it doesn't affect them. This is why I think the conflict is mainly cultural.