Who doesn't like pizza? Pizza can have so many different toppings and varieties it's just a great invention I would say :p
As my boyfriend is vegan we mostly eat vegan at home together.
We try to make things that aren't too complicated at the moment, so why not a pizza.
We just buy the base and topping sauce in the store and add some vegetables like onion, avocado, tomato and sweetcorn. We only put the avocado on the pizza after it is done cooking so it still tastes fresh.
Cheese, one of the most important ingredients when making a pizza. Luckily we can easily buy vegan cheese at the store around the corner. And it's not even that bad. Especially for something that's vegan ;)
It might not be super healthy as a vegan dish, but why not enjoy something that tastes as good (or better) as the non vegan option. And it doesn't harm other creatures or our environment.