People keep pet tarantulas for a variety of reasons. Some people find them fascinating due to their unique appearance, behavior, and interesting characteristics. Additionally, tarantulas are relatively low-maintenance pets compared to other animals, making them a popular choice for people who are looking for a unique pet that requires minimal care. Tarantulas are also quiet, do not require much space, and can be kept in a small enclosure, making them suitable for people living in apartments or smaller homes. Ultimately, keeping a pet tarantula can be a rewarding experience for those who appreciate these intriguing creatures.