Why are some words considered bad?

Words are considered bad due to their historical and cultural contexts. Over time, certain words have evolved to be related to taboo topics like bathroom functions, religious ideas, or negative feelings towards certain groups. These words were shaped by the societal norms and the discomfort associated with discussing these topics openly. For example, the middle finger gesture has a long history and is used to denigrate or show dislike for people. However, the perception of bad words can vary across cultures and families.