I find the fact that so many people decided to create their own "standard libraries", even after so many others were available a strong statement for the fact t

I find the fact that so many people decided to create their own "standard libraries", even after so many others were available a strong statement for the fact that one standard would be bad. Obviously, all these people had reasons strong enough not to use the existing tools, wanted something so different, that building it themselves, with all the effort involved, was a better solution.