Programming practice shows that overly generic constructs aren't that useful and typically lead to over-engineering, difficulty of maintenance and reduced produ

Programming practice shows that overly generic constructs aren't that useful and typically lead to over-engineering, difficulty of maintenance and reduced productivity. There are enough complexities in the problem domain and the system itself, so KISS is king. Good software is usually built by focusing on the actual problem being solved, and only generalizing solutions once sufficient amount of specific ones have been built and their commonalities identified to be lifted in a generic implementation. The most impact language purists tend to have is when some of features end up adopted and adapted by practical languages (C++ or even C#).