I have never gotten a flu shot. I get sick once or twice yearly EVERY YEAR for years now. My immune system is superb and freaky, despite my drug and alcohol use which supposedly lowers your antibodies.
Last year I got sick once, like in march or april...
But yet again, I recently went to the dentist after 14 years of not going and dentist was amazed I only had one cavity and gums a little swollen (due to cocaine most likely).
Ive been blessed with freak genes/immune system.
Also, ages 17-26 I barely practiced safe sex, hated condoms... never had an infection, only got crabs once, and killed them by shaving. Easy peasy lemon squeezy!