If a meaningful share of your customers in the Phoenix area speak Spanish at home, a Spanish version of your site is usually worth it, because people search in the language they think in and almost none of your competitors have one.

A real Spanish version means separate pages at their own addresses, with the words written by somebody who speaks the language. An automatic translate widget is not this. It produces text that reads as machine output, and because the translated pages have no address of their own, they cannot appear in a Spanish search at all.

That last part is the whole point. The value is not politeness. It is being the only result when somebody searches in Spanish for what you do.