1. Cost: The Hagia Sophia was an incredibly expensive project even during the Byzantine era, and its construction required vast resources and manpower. Replicating such an ambitious project on a large scale would be prohibitively expensive for most modern societies.
2. Technology: While the original builders of the Hagia Sophia had advanced construction techniques for their time, modern engineering has evolved considerably. Different materials, technologies, and design principles are now used to achieve seismic resistance and structural stability, which may differ from the methods used in the Hagia Sophia.
3. Design Considerations: The Hagia Sophia was designed for its specific purpose and location. Its unique design elements and architectural features, such as the massive dome, may not be suitable or appropriate for other types of buildings or environments.
4. Seismic Conditions: The Hagia Sophia's resilience to natural disasters is particularly relevant to the seismic activity in the region where it was built (Istanbul, which lies in a seismically active zone). However, different locations around the world experience different natural hazards, and buildings must be designed to withstand the specific risks and conditions of their respective environments.
In summary, while the Hagia Sophia is an architectural marvel that showcases remarkable resistance to natural disasters, it's not feasible or practical to construct all buildings in the same manner. Each structure requires careful design and engineering considerations based on various factors such as cost, technology, intended purpose, and site-specific risks.