I find it weird, I am from that generation which has grown up in a GUI world. Before trying ubuntu, I had hardly ever used the dose cmd. Learning to use this strange new tool is a fun experience, and it defiantly isnt a bad thing but I have to say, for more tasks I believe that I can still work quicker with a GUI. I am finding the more that I use the CLI, the more confident I become in it and productive it becomes.
Your level of productivity really depends on how you approach a task and the tols you choose.
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"Dude, real programmers compile" - Plato 428BC