I'm definitely in the minority on this forum, and in society as well with my aversion to vinegar.
When I went to vote in the poll, the only reason I didn't choose the most extreme response that it makes me sick, was that technically I consume a little vinegar in my salad dressing or in barbecue sauce.
But bear in mind it has to be a mild salad dressing where creaminess and/or cheese overrides the vinegariness!
Pretty much all Bleu Cheese (favorite), Creamy Ranch or Creamy Italian.
And the list of condiments I can't deal with could wrap around the Earth a time or two - pickles, vinaigrettes, mustard, mayonnaise, ketchup (only under duress and only a little bit), any kind of vinegary "salad" such as egg salad, pasta salad, tuna salad (I also hate tuna but that's for another thread).
So, basically I'm a picky eater and vinegar is singled out for super-intense hatred.