I still learn all I can, but my focus has shifted a little. I'm learning to program properly, to make new tools instead of understanding existing ones. I'm learning C and python and haskell and lisp (and looking for more!) and loving every minute of it.
I find it a little bit disheartening, however, the lack of curiosity that my peers display, even my fellow CS majors. To me, the computer is a vastly complex system, just waiting to be explored, and thanks to open source software, I can! But a lot of my peers don't see things that way. I would hazard a guess that part of that reason is that the environment presented to them is not particularly interesting, particularly in a windows or mac environment, where a lot of the details are abstracted as far away as possible. For me the spark of curiosity was ignited when I had a relic of a machine that I needed to make run faster. I tried to squeeze the most out of that computer, and it taught me enough to whet my appetite. I feel like our youth, my peers have been and are being short changed by technology today. I'm not sure what there is to be done about it, but I know that it isn't right.
Or, for a slightly less doomsday scenario, just a relatively simple problem affecting one person, but they're still trusting you to figure it out, and they're expecting you to do it sooner than later.
There's a point at which the fun really starts to go out of that. I've always been a bit of an adrenaline junkie, I've always worked well under pressure, but nowadays my favorite thing is quiet time in the sunshine digging about in the garden. (Oh god, that makes me sound old.)
Maybe this will never happen to you. I hope not! But I've been thinking a lot about what Chuck said, and about my frustrations with technology, and I think that maybe this has a lot to do with it.