OK, OP. Even though you sound like a lunatic - the church-singing story is irrelevant as you shared it, since you never actually connected it to your pathetic, infantile dislike of troll people, who actually simply need to be dipped in wet cement and placed on one's grandmother's lawn when dry (Honestly, we did this with all the troll children in our town.) - I'll play.
As a child I hated corn snakes, because one scared me as a child. I could deal with any other kind of snake, and really liked blue and black racers and rat snakes and hog-nosed snakes and even copperheads, but I hated corn snakes.
I hated fat children, and hated fat boys and fat girls in different ways. I still have a phobia concerning fat children. They not only disgust me, they scare me. Especially the ones who are so fat their eyes squint and the lose all individual expression. Like Fat Incarnate.
I hated the mustaches on old women. I still do. Nothing is creepier.
I hated the cheap shredded coconut in Mounds and Almond Joy. I HATED German chocolate cake, which seemed like a cruel joke. It was like eating hair with sugar on it. I still hate it. Although I like fresh coconut, coconut milk, and other decent products. Those candy bare - grotesque.
I hated, with my twin sister, the old Nestle commercials where they had a puppet dog that would snap its wooden jaws closed after mouthing the last word - "Chocolate" - in the jingle that went "Nestle's has the very best...." We would scream and run out of the room hysterical. It still gives me shivers.
I hated potato pancakes, sauerkraut, cooked carrots, asparagus, spare ribs, boiled or poached chicken, and liver of any kind as a kid. Now I like them all!