I hate that. The spanish flu killed my great grandfather at 28 years of age right of the boat and people tell me "flu vaccine is bs. Vaccines are bs. Flu is a bunch of shit. I'll do fine against any flu.". I don't know. The ignorance bothers me. Most of these people haven't even heard of the Spanish flu much less know it killed around 50 million people including plenty who were very fit, young, and healthy.