I've been keeping a list of things that 20 year old naive me thought were absolutely disgusting and that mature me finds fucking fantastic now:
Sushi/sashimi - ewww, raw fish
Museums - ewww, art and history
Blue Cheese - ewww, moldy cheese
Raw Oysters - ewww, booger seafood
Pedicures - ewww, someone painting my toenails
Kimchi - ewww, fermented jar cabbage
Asian fish sauce - ewww, fermented fish juice
OP - ewww, internet stranger
Edit: I like dark chocolate too but it doesn't have the same je ne sais quoi as saying "raw fish" or "moldy cheese".