That seems very short sighted in evolutionary terms. Guns, Germs, and Steel has served to give me a bit of trepidation about avoiding sickness for convenience sake.
So, apples and oranges.
There are reasons to have reservations about flu shots that do not apply to polio and such.
you have no idea what you are talking about.
What purpose is currently served in your body by the imprint created by a flu shot that you had seven years ago (at which time it was 60% effective at best to begin with)?