I'm a programmer, so yes, I'm comfortable with various shells, but I think some people seem to overly fetishize it, like it's a badge of their geekdom or a symbol of their arcane power over a computer. The command line is just power and flexibility at the expense of user friendliness. Once learned, it's a very handy tool in your arsenal, and can be more efficient for some type of operations. Don't pretend it's anything but that, or you're just fooling yourself.
Personally, I'm with Doug Englebart on this one. Why do people ride bicycles instead of tricycles? Tricycles are easier to learn and harder to fall off right?
People ride bicycles because there's a perceived benefit to doing so, and so are willing to put in the effort to learn. People tend learn a few of the more advanced tricks in Excel for the same reason, or touchtyping. Sure discoverability and smooth learning curve helps things, but ultimately people need to see how learning a particular skill will be useful to them, and I think we programmers do a fairly bad job at showing this to people