Tail recursion considered harmful

I don't believe in recursion as the basis of all programming. This is a fundamental belief of certain computer scientists, especially those who love Scheme and like to teach programming by starting with a "cons" cell and recursion.

Is it really such a big deal to rewrite your function to use a loop?

>>11
Why?

F(n) = φⁿ−(1−φ)ⁿ
          √5