Many years ago, my buddy and I went on a bit of a road trip, to Elmira NY. I think it was the first night we were there, we went to a place, decided we'd like a pizza, looked at the menu and saw pineapple on the list of toppings, but never saw ham listed anywhere as one of the toppings. Waiter came by and we were asking about getting ham on our pizza, and his reply was... " If you want ham on your pizza, your going to have to go to Pizza Hut". He says this almost like we were crazy for even considering ham on a pizza. And then , just a little more than now, thought anyone who'd put pineapple on a pizza must be crazy.
Still to this day, I don't understand why on earth anyone wouldn't consider ham on a pizza... unless of course it were religious reasons, but I'm 99.9999% sure that wasn't the reason they didn't serve ham on a pizza in Elmira NY ( circa 1981 )