To me, there is a large category of "meh" ingredients that I neither like nor dislike. I can understand how others might like them. While i don't "like" them, I don't really "dislike" them either.
Like chicken. Some people like it, I'd never request it, but I wouldn't refuse it either. While I like anchovies, I can easily understand why someone else would not, and so I rarely request them either.
Once, someone offered me a slice of broccoli, walnut, and black olive pizza. Given the setting (ahem.

) I acted as if I'd be interested in trying it. To my surprise, that particular pizza actually
was pretty good, although in retrospect there was sauce and seasoning and cheese selection that complemented those flavors as well. I've tried that combination again and it wasn't nearly as good (in fact, it tasted just about as good as it sounds.)
Sometimes I like sausage, sometimes I don't. It really depends upon the quality of the sausage. Bad sausage is awful. Most of the time, if I'm ordering pizza, I'll include pepperoni but I'll exclude sausage -- too risky unless I've had their sausage pizza safely before. On the other hand, nowadays I make pizza far more often than I buy it, and so we'll have sausage pizza every time, since I know I'm buying the good stuff.
At some point, it's hard for me to resist an aside to someone who says a fruit like tomato doesn't belong on his pizza, me, I like marinara sauce. It's really fun when I use garden-grown tomatoes, cayenne pepper, green pepper and oregano in making the sauce (along with garlic, black pepper, and onions). We have a deep dish pizza tray and sometimes if the spouse is away I can even have pepperoni!
We used to have a local place that made a great white pizza with spinach. Another surprise combination from someone else that I'd never have thought of but really enjoyed. It's gone now though.

Ordering the same pizza from a different place, again, it's "meh" because there was something special about the way the first place made it that no one else seems to replicate.