Well, the fact is that the software life cycle phase in which it lives the longest is maintenance. During that time it is mostly read and analyzed by humen trying to fix it, reuse it, enhance it, etc. That is the best reason to keep it easily readable and understendable. Someone stating that he has no time to worry about style, which explicitly influences readibility, shows only his immaturity as software engineer. Or maybe simply no understanding of software life cycle.