Generally, I hate seafood. Even the freshest sea food tastes like it went bad. I remember the stench of my dad's scallops--ugh! To make matters worse, it took my wife several years to finally accept that I don't secretly like seafood and just don't know it!
I also can't stand mayonnaise. I detest cream-based soups. I have nothing against butternut squash itself, but anything served pureed reminds me of vomit. It's fine when roasted--especially with some southwest spices.
I remember being pickier as a child, but I also remember being able to eat some fish before the age of 12 or so. I also used to have issues indirectly related to food, such as being unable to tolerate wooden popsicle sticks.
Over the years, I have come to like a wider variety of food. This weekend, I had a pizza made with Gorgonzola cheese, for example.
My kids are extremely picky and they hardly eat at all. My daughter lives on ramen, perogies, cucumbers, carrots, eggs, and maybe a few other things. She is a vegetarian who does not eat very many vegetables. Recently, she found out that most cheese is made with rennet. I avoided telling her this because she eats so few foods already. She probably won't eat pizza now because she can't be sure that the restaurant uses rennet-free mozzarella. This means more fries for dinner!