The question is not whether pinapple belongs on Pizza, The question really is whether pineapple belongs on everything or not. The first is a given, but the second is slightly questioned
Does pineapple belong on Pizza

Back then, I didn't think pineapple belongs to pizza and said to my sister that it doesn't even belong with pizza as it might offend Italians pretty much but when my mom brought pineapple from Little Caesars, I was hesitant to eat it at first but I tried it and it blews my mind that it tasted so good with ham and cheese that I managed to eat 4 pieces of it.
This is my opinion on pineapple pizza.

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Pineapple definitely does NOT belong on pizza