The decision to have an abortion in the case of a prenatal diagnosis of Down's Syndrome is a deeply personal and complex choice, so I recommend you choose based on your beliefs of pro choice or pro life. Various factors can influence one's decision, such as personal beliefs, values, and circumstances.
Some people may choose to have an abortion because they feel they cannot provide the necessary care, resources, or emotional support that a child with Down's Syndrome may require. They may also be concerned about the long-term well-being of the child, as individuals with Down's Syndrome can face a variety of health issues and developmental challenges.
Others may choose to continue the pregnancy, believing that every life has inherent value and that individuals with Down's Syndrome can lead fulfilling lives with appropriate support and resources. These individuals may also draw on their personal, religious, or philosophical beliefs to inform their decision.