Answer:
The only thing I can think of, is stress. I cannot tell you how frustrating it is when you're writing code and it decides to bug out because of some little mistake. For hours you're writing and find out that you're missing a single ";" or an indent.
When you're writing out code in order to solve a problem, you need to break it down step by step in order to actually write it. Otherwise, you'll miss a bunch of steps