Because facts aren't enough to win an argument. Especially when people pushing false conspiracy theories don't care about being consistent or accurate. Especia

Because facts aren't enough to win an argument. Especially when people pushing false conspiracy theories don't care about being consistent or accurate. Especially when you need to "win" with over 95% of the population and not just a plurality or majority. Also sadly some news media, some politicians, (don't know about labor unions sadly would not be totally surprised)some celebrities and vested interests are pushing harmful anti-vax agenda that hurts everyone.