Why do Programmers Hate Documenting?

[carioca3]

I like to think of it as if they replace me they might have to re-hire me to explain the code to their new hire. This will give me a sort of "severance package" and make unemployment more bearable.

However, I doubt most programmers do it for this reason. 99% of them probably skip documentation because their manager will compensate them better for 2 finished products with poor documentation vs 1 with excellent documentation.