Because the benefits of the extra people cycling without a helmet outweigh the safety benefits of the fewer cyclings all wearing helmets. https://www.theguardi

Because the benefits of the extra people cycling without a helmet outweigh the safety benefits of the fewer cyclings all wearing helmets. https://www.theguardian.com/lifeandstyle/2015/aug/12/mandatory-bike-helmet-laws-do-more-harm-than-good-senate-hears https://www.theguardian.com/lifeandstyle/2015/aug/12/mandato... there are more sources from more countries.