The cost of removing an impedance mismatch between other peoples's code and your code base is inversely proportional to the scale of your code-base. If you have

The cost of removing an impedance mismatch between other peoples's code and your code base is inversely proportional to the scale of your code-base. If you have a 10 line program, use the standard libraries. If you have 10 billion lines of code, write your own language. Everything inbetween is a trade-off between comfort and effort.