Usually its simply a dislike for a particular food though, or perhaps allergies or other medical condition, or just because something is not appealing. Such as I have not tried raw oysters and do not expect to. I do like oysters in dressing or properly fried in seasoned breading, but why taste something I know I'll hate? Our daughter finally goaded me into trying sushi. It wasn't horrible but it is something I will never choose on my own unless I was literally starving and it was the only food available.
Foxy, I knew when I said it, that I shouldn't have... It's better that I sometimes keep my opinion to myself, but the cat is out of the bag... My particular "pet peeve" when it comes to expressing a strong dislike for something and never even attempting to try it just because it sounds "yucky"... Take for instance my distaste for Liver of any kind... I have had liver fixed and placed in front of me by countless people and many various ways... I don't like the taste of liver, but I would try each and ever time... And believe me I was my Mother's biggest disappointment when it came to liver as she loved it. Both of my parents were children of the Great Depression and you know as well as I do, that these folks were taught from birth not to waste anything and I will repeat anything... It was a damn good thing I wasn't picky, because I would probably still be sitting at the supper table if I were...
I don't expect folks to change their dietary habits, I would'nt want anyone to... As a citizen of the Universe I am expected to accept a whole lot of strange things... Some I do and some I don't... People tell me to have an open mind because they see me as an grumpy Oldman yelling "stay off my grass"... Well excuse me as I am going to eat my breakfast... I am having Balut and Fish eyes...