For the last time, all of your opinions are WRONG!
No, pineapple isn't a required ingrediant in pizza.
And no, pineapple is not for fags.
Pineapple is good on pizza, and adds diversity to many pizza types which require added sweetness. But some of the best pizzas, such as meatlovers, do not need it! Pineapple can ruin very good pizzas. but no pineapple can ruin other good pizzas.
Like the cookie monster says on sesame street (or so kerrby tells me) it is a sometimes food. Give it a chance, but not too much of a chance.