Thoroughly agree. There are very rare times where you need to write your own low level, high complexity system for a high level application, but ... they’re re

Thoroughly agree. There are very rare times where you need to write your own low level, high complexity system for a high level application, but ... they’re really, really rare nowadays. Almost always it’s developers practicing resume driven development. I’ve never worked with anyone who tried to implement their own database, but I have worked with people who implemented their own network protocols, JS SPA frameworks and service discovery layers, and they were all really bad ideas. It gets even worse when said person leaves the company, their system is still critically important and full of bugs, and has the inevitable little-to-no documentation. Other devs have to maintain this mess, and nobody truly understands it.