No, but it's visually clearer to me at a glance. It feels weird using letters, let alone full English words, to describe a mapping or anything else that I think a symbol is more suited for.

To me it would feel like assigning a variable with:

   a equals 6
   n equals "A"

Just feels icky, somehow.

Again, that wouldn't dissuade me from using the language whatsoever. It's only a minor irritation.