FTDK
Let me be more specific. I think your experience is my minority condition!
1. While VFR aircraft are excluded from ADS-B, there can be no real safety benefit. Every single traffic alert I've had has been with another VFR aircraft. This includes VFR aircraft flying non ICAO levels at 10,000 ft and another time I was given an alert for a proximity to a VFR aircraft while I was in cloud. ADS-B for IFR aircraft only does not help this.
2. I haven't done a full search, but the look I've had at reported GA near mid air collisions suggests that none would have been avoided with ADS-B fitted.
The area where ADS-B helps is in remote areas outside radar coverage. Its a nice feeling knowing you are on someone's radar in outback areas, but there are other mechanisms and you are still not provided with any better traffic warning with respect to VFR aircraft.
Australia is the only country in the world that is mandating ADS-B for all IFR aircraft in all airspace types at all levels.