Do you think Pineapple on a Pizza is wrong
Yes. I believe I would say it's one of my least favorite toppings, behind anchovies. Atrocious. Horrid. Culinary malpractice.
I honestly don't know why people don't stick with the traditional cured meats. Nothing beats a classic Pepperoni. 
PREACH. I do like other meats though. Pepperoni rolls are legit though, like from DoubleDave's. Ever been?
Can't say that I have been to DoubleDave's. Assuming a regional chain? What are they known for?
Yeah, based out of Austin, Texas, but they're all over the state. Easily the pep'roni rolls. Look them up.