Back when I was a Windows developer, I learned all sorts of arcane things about the platform. I felt I had to in order to be a good developer, and much of it was necessary to support customers running into problems.
Four years ago I bought a Mac, and three years ago I ditched Windows entirely and started learning Android development on my Mac.
I decided I really didn’t want to learn all the innards of the Mac. I never liked dealing with all that on Windows, and since I wasn’t a Mac developer I figured I could skip it.
Which means, of course, that I’m totally useless with the command line. Terminal? No thanks. Bash? Forget it. Git? I’ll use SourceTree instead. If it doesn’t have a GUI, I don’t want to touch it.
Sure, there are probably a ton of cool things I could do from the command line. But I’m happier not feeling I need to know all that stuff.