Why all logic function in a digital system are often generated with single gate type?

Using a single gate type, such as NAND or NOR, to implement all logic functions in a digital system simplifies design and manufacturing processes. This approach enables the creation of more uniform and efficient circuits, as it reduces the complexity of the overall architecture. Additionally, using one type of gate can streamline integration and reduce costs in production, as well as enhance reliability by minimizing variation in component characteristics. Overall, it facilitates easier scalability and maintenance in digital systems.