It is generally considered unethical to keep pet monkeys for several reasons. Monkeys are highly intelligent and social animals that require complex environments and social interactions to thrive. Keeping them as pets can lead to stress, behavioral issues, and health problems due to the inability to meet their physical and psychological needs in a home setting. Additionally, the exotic pet trade often involves illegal trafficking and contributes to the exploitation and suffering of wild animals. It is advisable to support conservation efforts and promote the protection of monkeys in their natural habitats rather than keeping them as pets.