Eggs. I used to like them, but I tried to go vegan for a while and cut them out, then landed vegetarian mostly due to cost. I still try to keep eggs and dairy out because of culling and early calf separation/veal. But the odd time I have egg at a family gathering or something, it tastes so weird now
What’s the most widely enjoyed food that you can’t stand, not because of allergies or anything but just because you hate it?