An anonymous reader writes: I am in a bit of a dilemma, and wanted to seek the advice of the Slashdot community. I got my B.S. in Computer Science in 2008 and was working as a Software Engineer writing real time space-flight software, which I really enjoyed. I've since moved over to a job that ended up being IT. While I am okay staying here for the next few years, I want to make sure that when the time comes to move on, I can get back into what I loved. My biggest fear is that IT has sucked me in and it'll be very difficult to leave. Does anyone have any experience in this? Is the fear even rational?