As I recall, there was some stat years ago indicating that people who regularly attended Wings seminars tended to have less accidents and infractions. Something about having an "attitude of safety" that was carried over to their flying. Not sure I completely buy the stat, but there is probably something to be said for the idea that people who attend are at least actively thinking about flying and procedures.
I've been attending (and sometimes speaking) at them since they started in, as I recall, the mid 90's. Very few haven't been worth the few hours of presentation and discussion.