Why were many people in Europe afraid to try tomatoes on their pizza?

Many people in Europe were initially afraid to try tomatoes on their Pizza due to the belief that tomatoes were poisonous. When they were first introduced in the 16th century, tomatoes were part of the Nightshade family, which included toxic plants. Additionally, their bright color and unfamiliarity led to suspicion and reluctance among the populace. Over time, as tomatoes became more common and their culinary potential was recognized, they were embraced as a key ingredient in pizza.