I don't know there's a lot of flavors I love or find tolerable but as far as the worst
to touch on vanilla I think it's the weakest but serves as a base dessert for cakes and pies but I'd much prefer french vanilla over regular vanilla because it has a stronger and more dedicant flavor and texture.
Honestly I don't venture too much outside of my usual flavors such as...
Butter Pecan
Strawberry
French Vanilla
Coffee
Chocolate Peanut Butter
Cookie Dough
Peach
The worst imo is Neapolitan I don't like the idea of three different ice creams mixed together touching each other
I like to enjoy and savor one flavor at a time.