I won't eat mushrooms, onions (Unless they are finely diced or chives), most peppers (I like jalapenos finely ground or diced in foods), olives, cooked fruits, most cooked vegetables (Carrots and potatoes and stuff are cool), and I love food. I also love most seafood but I hate it deep fried (fish and chips, deep fried calamari, deep fried scallops, etc).
I dislike ordering foods and asking for these things to be removed as I feel it removes from how the meal was originally intended to be, so I try to only order foods without those things.