Unless you're using a functional programming language that does not support iteration. (and even if it does support it, it's typically preferred to use tail recursion)
While others are by GOs possessed,
And WHILE-DO, CASE, and all the rest,
The LISPing hackers will prefer
With COND their programs to invest
And let their functions all recur
When searching trees in maddened quest.
The bigger issue is that they're essentially entirely incorrect. "Recurse" is both in common use and well understood. I'd even argue that it's more correct than "recur", since it's unambiguously about recursion.