It's to protect the elderly, young, and immunocompromised people around you who you might pass it along to. Or if you have friends who are parents of babies- yo

It's to protect the elderly, young, and immunocompromised people around you who you might pass it along to. Or if you have friends who are parents of babies- you could give them the flu, and they could give their baby the flu and the baby could die. If you have the vaccine, that's less likely to happen. How much likely, depends on how protective the vaccine is in any given year. But it's better than nothing.