At some point in a developer career one shifts from a tool focus to a work focus.
I used to be picky about my operating system and often would spend time making the tools that I wanted or preferred to use work within the project dev environment, as opposed to just using the tools my employer provided. It usually ends up just being easier, and if everyone is using the same tools then pair programming or collaborating becomes easier, too, as compared to having to deal with the one stubborn dev who insists on using Emacs on a Mac when everyone else is using Visual Studio.
I think the benefits are when you already know the extent of your work and you can build tools to steamline you workflows. Now having something that you love working with instead of making you frustrated every day is very nice.
I used to be picky about my operating system and often would spend time making the tools that I wanted or preferred to use work within the project dev environment, as opposed to just using the tools my employer provided. It usually ends up just being easier, and if everyone is using the same tools then pair programming or collaborating becomes easier, too, as compared to having to deal with the one stubborn dev who insists on using Emacs on a Mac when everyone else is using Visual Studio.