> No-one ever even thinks about complaining that you can't swap C for Python or Java without major rewrite yet these languages are nothing but glue between data

> No-one ever even thinks about complaining that you can't swap C for Python or Java without major rewrite yet these languages are nothing but glue between database and UI that SHOULD be interchangeable at any time. One of the main benefits of Python is that you can easily swap it for C. 95% of the stuff I do in Python every day is only possible due to existence of numpy. And in general programmers care about interop a lot. Interop with C was, obviously, one of the main points of C++. One of the benefits of JVM languages like Kotlin or Scala is simple bidirectional interop with Java. Docker became so popular because you can simply containerize your app and run it anywhere without being tied down to specific requirements of your environment. Etc, etc.