Flu shots definitely work dude. My grandmother unfortunately used to get the flu every year in Winter (5 years straight!) when she was 20 years younger. Ever since she started getting flu shots yearly on her doc's recommendation, she's never gotten it again, even though she's much older now.
I also knew a kid who died from meningitis his first year at college because his parents refused to get him vaccinated.
Honestly, vaccines are not what they used to be 40 years ago - there used to be a lot of mercury (thimerosal) and other dangerous preservatives in them back then - nowadays most vaccines use thimerosal-free preservative.
Also, the biggest guy in the anti-vaccine scene who claimed they caused autism was found to be a fraud and his study was retracted ( Anti-Vaccine Doctor Planned to Profit from Scare : Discovery News ).