Programmers tend to loathe writing bookkeeping software. Just thinking about doing something so mundane and un-sexy as writing a double-entry bookkeeping system is probably enough to make a whole raft of programmers contemplate switching careers in earnest. This is interesting because at heart all programming is bookkeeping. If a program works well that means that all the results come out exactly as expected, there is no room at all for even a little bit of uncertainty in the result.
