Incompatibility, lack of stability and other churn inducing changes are the nemesis of software maintenance. The implied cost is immense and soul sucking. In

Incompatibility, lack of stability and other churn inducing changes are the nemesis of software maintenance. The implied cost is immense and soul sucking. In many cases it’s pure vanity as well. It’s fine for early languages, research languages and toy languages. But outside of these categories it’s not worth the cost.