Always been a geek, used to code, love to think in terms of systems / data / interfaces... kind of missed that natural "tech" path in my career, went to a top business school out of what you'd call laziness (achieving a top business school in France is much easier than achieving a top engineering school)... so reading HN in a way is a way of fulfilling my passion for tech and my curiosity for all those geeky areas from engineering to physics to maths to whatever you'll find on HN any given day.
I have to add, carrer-wise, that being able to have an educated opinion on IT matters when you're not the IT guy in the room is actually extremely valuable, and one good excuse to keep reading!