It likely depends on what you're doing as well. For programmers who spend most of their time editing source code and working on a small number of development ma

It likely depends on what you're doing as well. For programmers who spend most of their time editing source code and working on a small number of development machines it makes sense to put some effort into customizations to optimize workflow. For sysadmins who have to be able to do work on thousands of machines across various environments it makes sense to know the stock settings inside and out.