Why is it important to use apostrophes?

Apostrophes are important for indicating possession and forming contractions, which clarify meaning in written communication. They help distinguish between phrases like "the cat's toy" (indicating the toy belongs to the cat) and "the cats toy" (which could imply multiple cats or a toy named after cats). Proper use of apostrophes enhances clarity and professionalism in writing, preventing misunderstandings and improving overall readability.