I'm formally a nihilist, which makes this a troublesome question. Obviously, though, that isn't a terrribly useful operational philosophy. In practice, I think that I might like to teach(something in the humanities, being a professor strikes me as quite attractive, though I fear that I'm not sharp enough) or maybe add some science to the mix and do some IP law. The issues brought up by new technology seem to be at a critical point these days, with IP/patents/online speech/DMCA/Trusted Computing/&c. being hammered out. The questions are nontrivial, and we, as a society, could be stuck with the answers more or less forever. I'd rather like to try and help us reach the right ones(People like Lessing and Stallman, among others, come to mind, though I doubt I'm at their level).