Advantages of purchasing real estate in Affton, Missouri could include:

1. Affton is located in St. Louis County, Missouri, which provides easy access to the major metropolitan area of St. Louis.
2. There are plenty of affordable housing options available for homebuyers, as well as a mix of different types of properties, such as single-family homes, townhouses, and condos.
3. The area has a diverse mix of restaurants and shopping options, providing residents with plenty of entertainment and convenience.
4. Affton is known for its good schools, which is a strong draw for families with children.
5. The area has a low crime rate compared to other parts of the city.

Disadvantages of purchasing real estate in Affton, Missouri could include:

1. Despite being a suburb, there may still be some traffic congestion on the main roads and highways leading in and out of the city during rush hour.
2. Affton can experience harsh winters with cold temperatures and plenty of snow, which may be an issue for some homeowners.
3. Affton may not have as many opportunities for career advancement and employment as larger cities.
4. Property values in Affton may not appreciate as quickly or as high as in other hot real estate markets.
5. Some homes in Affton may be older and in need of repair or renovation, which could lead to additional costs for home buyers.