"Functional Programming is more like mathematics." I would completely agree. In fact, I would add to that and say FP is mathematics because its "Functionally" based and was originally created for easy inductive proofs.
However, from a readability standpoint, english is better than mathematics, and readability counts for quite a bit if you aren't planning on throwing away your code.
"However, from a readability standpoint, english is better than mathematics"
That depends on what you are reading. Try reading differential calculus in English, without using notation.
Not to take anything away from your point (and I think it is a good one), but there are all kinds of code. Functional Programs can be astonishingly elegant.
However, from a readability standpoint, english is better than mathematics, and readability counts for quite a bit if you aren't planning on throwing away your code.