When it comes to comfort food, it doesn't really get much better than pizza. I really don't know many people who don't like pizza purely based on taste.
Now the logical part of my mind absolutely hates pizza. It's not a significant source of protein, it's loaded with unhealthy fats and carbohydrates, and I can eat an infinite amount of the stuff. I mean, it doesn't matter how much pizza is in a box, the answer to how many slices I will eat is all about how good the particular pie tastes.
The bottom line is the only way I won't want to eat pizza is if I consciously choose to avoid it, despite how much I love it. But trying to make someone feel grossed out by the food is not really an effective way to get them to not want to eat it, plus it doesn't offer a long-term solution for those trying to be healthier. After all, pizza, like most unhealthy stuff we crave, is totally fine in moderation.