Indeed, personally I am not in favour of a mandatory helmet law because it is a panacea. On the flip side, people need to realize helmets can increase safety and stop using the fact that helmet laws are mostly panacea as proof helmets can't increase the individual's safety. Often that increase in personal safety is offset by a lack of commitment by public and government to provide safe places to cycle, making the overall situation increasingly dangerous. IMO infrastructure and providing a place for us to cycle is what can increase cyclist safety and raise cycling numbers, that is harder to develop(as you can see by Toronto's Councillors horrid remarks).