The flu still kills thousands of people (and not just feeble old ones) every season in a country as medically advanced as Germany. If you react badly to the vaccination then don't do it of course, for all others: It's a comparatively cheap and painless way to perhaps save your life. I've had the flu twice in my life - once in the late nineties (and I've never been as sick as hard and as long, I was still sweating and out of breath three months later) and a couple of years ago when the swine flu hit me and I fevered up to the max within two hours, the good thing about the swine flu was that the worst parts of it only lasted 36 hours - probably due to my regular flu shot, swine flu vaccine wasn't yet available -, the other flu had me in bad "can't find no sleep" fever for more than a week.
It's not just a more severe cold, remember that whether you are vaccinated or not.
