Most professionals would disagree.<quoted text>
I agree with your comment.The Flu shot is just a guess of what the flu strain will be this year. They guess so they will have them made and ready in time. I myself have never had a flu shot and plan on never having one. That goes for my family as well. The best defense is to wash your hands frequently and keep your hands away from your mouth, eyes and nose. Also get plenty of rest and eat well. On top of all of that stay away from people who are sick. You may still get the flu and when you do if you do stay home and away from others.
You also can't just think of it as a one year thing. I've gotten flu shots for 4 years now. Those flu shots impart immunity to all sorts of flu strains ... the immunity lasts more than a year too. Even if this year's flu shot doesn't include the predominate strain(s) going around, there is a chance at one point in the past I have received a shot that will impart some degree of immunity.
Does it make you bullet proof; no, it's more of a statistical analysis? Statistically if you get a shot you stand less of chance of getting the flu. If you want to lessen your chances, it's probably the best thing you can do and one of the easiest and most passive things you can do to protect yourself.